I’ve found that it works fine to just sleep and resume, although I’ll usually save my game (if the game supports it) to be on the safe side. The only issue I’ve had was one time I did this with Dave the Diver and it seemed to record the whole time it was on sleep as game time, so now when I look at it on Steam it says 50 hours but I’ve only done 10-15 hours. Only happened once though.

Hoping for Dredge, Rimworld, Dead Cells, and Outer Wilds.