Maybe give Infinity for Lemmy a shot! I don't have a tablet to test on at the moment but I recall Infinity for Reddit (which this is a fork of) supporting tablets.
Some minor bugs but development is moving quickly. Bazsalanszky is doing an incredible job and I'd personally consider the app to be in a usable state for the average Lemmy user already :)
I am still using connect, but long term I hope the development for "Slide" goes well. That is what I used on my tablet for Reddit and imo it was great.