“Is there any way the new heavens and new earth could be happening now?”
The idea that the new heavens and new earth prophesied in scripture exist today “in seed form” is a concept embraced by a subset of the post-millennialist prophetic school. They would say this seed “grows and spreads and becomes more and more manifest until it finally culminates in the Final Coming of Christ, which introduces the Eternal State”.
I feel like that’s a major stretch.