Comment by PennRobotics

My Thinkpad from the same 2022 timeframe (a Z13 Gen 1) was very awful all around, particularly w.r.t. sleep. Lenovo serviced it multiple times, never fixing it and refusing to complete a return under warranty. (Happy ending: Laptop got stolen. Insurance paid.)

I have the hope that Lenovo acquiring Phoenix will fix some of the awfulness.

There is a guide on Reddit, "How to enter advanced BIOS options on Gen 1 T15(g/p), P15(v), P17" which also applies to each generation of P16. It's possible a setting in there will finally cure your laptop's insomnia?