Your instincts are correctThe source for all scripture is the Holy Spirit, but you are lookingso we should recognize that all scripture is bound together in the wrong directionand from that one source, and will connect one to another. Peter did not need a dependency upon Revelation As all scripture is God-breathed (2 Tim. 3:16), as there was common knowledge and a common sourceas all scripture is not of private interpretation (2 Pet. You need1:20), then we must rely upon God's word to turn arounddefine and interpret God's word. The scriptures must be the source code, and we look atfor the Old Testamentfirst and original use of those scriptures to be able to understand their meaning when used in later texts. There
The dates for the books presented in the question are many scholars that knewsuspect, as better information for their dates of writing are available from DatingTheNewTestament.com / knowhere . The site provides the source from whichdate for 2 Peter as close to A.D. 60, Pauland for Revelation somewhere around 69 -70 AD. Although, there is room for earlier years authorship, as Robert Young's Analytical Concordance states regarding Revelation:
"It was written in Patmos about A.D. 68, whither John had been banished by Domitius Nero, as stated in the title of the Syria version of the book;..."
The best answer is that Revelation refers back to 2 Peter in several verses. In addition to those listed above are Rev 2:14 & 2 Pet 2:15; Rev 3:10 & 2 Pet 2:9; Rev 5:6 & 1 Pet 1:19; Rev 5:9 & 2 Pet 2:1; Rev 18:13 & 2 Pet 2:3; Rev 20:2 & 2 Pet 2:4; Rev 20:11 & 2 Pet 3:7; and John drew was the Old TestamentRev 21:1 & 2 Pet :13.
The Bookearlier book, therefore cannot be said to rely upon the later book. So, we look for Revelation, that later book, to reference the earlier book of 2 Peter. And, there are several authors who have commentaries which relate several passages of Revelation to 2 Peter, as well as to much of the New Testament books.
The Book of Revelation, by Foy E. Wallace, Jr - p. 426:
The source code for Revelation is the Old Testament. Some of the parallels of Revelation andBishop John Lightfoot, on the OTnew heavens on new earth:
Isaiah’s vision of the throne--Isaiah 6 and Rev. 4.
Ezekiel’s vision of the living creatures--Ezekiel 10 and Rev. 4.
The vision of the valley full of the dry bones--Ezek. 37 and Rev. 19.
The vision of the everlasting kingdom--Daniel 2:44 and Rev. 11:15.
The vision of the new heaven and the new earth--Isaiah 66 and Rev.21.
The vision of the horses with mingled colors--Zech. 1 and Rev. 6.
The vision of measuring Jerusalem--Zech. 2 and Rev. 11.
The vision of the ruling priest-king on the throne-- Zech. 6 and ev. 5.
The forecast of the siege and fall of Jerusalem--Zech. 14 and Rev. 14.
The destruction of the third parts -- Zech. 5 and Rev. 8
The plagues of Egypt -- Ex. 7-12 and Rev. 6, 8 & 9
The holy city, the new Jerusalem--Zech. 14 and Rev. 21.
The seven golden candlesticks--Zech. 4 and Rev. 1.
The living waters flowing from Jerusalem--Zech. 13-14 and Rev. 21-22.
All of the books of the NT, including Revelation were written before A.D. 70 and before the destruction of Jerusalem and that Mosaic sacrificial temple. That temple had been the center of their worship. If it had already been destroyed when the books were written, the impact could not have failed to be mentioned in the books. See previous Q&A here.
"That the destruction of Jerusalem is very frequently expressed in Scripture as if it were the destruction of the whole world, Deut. 32:22; "A fire is kindled in mine anger, and shall burn unto the lowest hell, and shall consume the earth with her increase, and set on fire the foundations of the mountains.' Jer. 4:23; 'I beheld the earth, and lo, it was without form, and void; and the heavens, and they had no light,' &c. The discourse there also is concerning the destruction of that nation, Isa. 65:17; 'Behold, I create new heavens and a new earth: and the former shall not be remembered,' &c. And more passages of this sort among the prophets. According to this sens, Christ speaks in this place; and Peter speaks in his Second Epistle, third chapter; and John, in the sixth of the Revelation; and Paul, 2 Cor. 5:17, &c". (Works vol. 2, pp. 18-19)
The dates that you have been taught for their writing is incorrect. Better informationPhilip Mauro's commentary on the dates of the NT books is available at DatingtheNewTestament.com hereRev. 20:11-15:
There are many scholars throughout the last 1800 years that recognized the last days were those days of the first century A.D., and that Revelation was the culmination of the ages of prophesy from the OT.
"And now is fulfilled the prophecy of Peter; “The heavens shall pass away with a great noise, and the elements shall melt with fervent heat; the earth also, and the works that are therein, shall be burned up” (2 Pet. 3:10). John’s brief statement, “from whose face the earth and the heaven fled away; and there was found no place for them”, declare that now they have ceased to exist." Source: Of Things Which Soon Must Come to Pass, p.525
Greg Bahnsen, Historical Setting for The Dating 0f Revelation, 1984
Bishop John Lightfoot's Works 1685 edition
Dr. John Owen, Sermon on 2 Pet iii, Vol 9, p. 134, 1721 Link: https://www.preteristarchive.com/russ-ap2o/
Peter J. Liethart, The Promise of His Appearing, An Exposition of Second Peter, 2004
Kurt Simmons, All Things Made New, The New Heavens & Earth, 2017 preteristcentral.com here.
I also have many of the OT sources for Revelation documented in my posts "The Signs of Revelation", Parts I - VIII at my blog ShreddingTheVeil.org here.
In short, look back to the OT and you will find that the NT authors knew the prophets well.