You ill not have high fees without people willing to:
- move coins
- pay higher fees to do so
The only thing that can trigger a rush of those is:
- people taking their profits and rushing to exchanges , it's not happening now so might not in the future either
- a new ordinal craze triggered by the price increase and FOMO, possible
- temporary for 14-20 days a huge loss in hashrate as lower margin quit that would rise the blocktime to maybe 12-15 minutes, definitely possible and I'm quite expecting it
That being said, with more and more coins being held by custodial wallets, thus the profit taking would most likely be offline, with no real need to spend it (why spend it when you can get 10% return in a week) I doubt we will see a prolonged chain and mempool congestion.
It will happen for hours and days maybe at random but not that in 80 days from now the averge fee will be double for all this epoch.