I’d probably lower by 0.25 and the cylinder … really a question that’s hard to answer for sure. If they’re cheap to order get both and compare.
Normally it’s fine to let it go. It also being the higher diopter eye, it’s just maybe 80% likely. 🙂
A bit of patching, just as a game. 10 minutes is plenty, the trick is to make it fun and consistent.