Abstaining and not touching your dick at all will definitely make being a bottom more intense. I started having problems keeping a erection after getting covid so I decided to just go full bottom. Problem was I couldn't never cum with just my hole, so i decided to not touch my dick for pleasure. instead when ever I was horny I'd just play with my hole, use a dildo, and of course get fucked. After a week and a half I was able to cum with just my hole and light occasional tugging on my dick, after a month I can cum without touching my dick at all and sometimes I even cum when soft. Now I only let myself cum if it's from a real dick and it's been some of the most intense sex I've ever had. So if you want the best bottom experience you can have, rewire your brain to only seek pleasure from dick