Farting as you relax and when you bring your knees up towards your chest (common when you sleep on your side) is pretty normal. It might also be a timing thing based on when you go to bed relative to when you’ve eaten.
You might look into why you fart so much if it’s excessive. For instance, I have an odd food intolerance called fructose malabsorption - excess fructose doesn’t get digested, so it just ferments in my intestines. If I eat a lot of it, I’ll get massively painful diarrhea, but usually I just get some gas.
The same thing happens with people who are lactose intolerant: they can usually have some amount of lactose and they just get gassy, so some people don’t even realize they have it.
Other things can also cause unusual amounts of gas.
I read quite a bit, though it’s notched down a bit since my wife and adult son got me back into playing WoW in the evenings (we used to be away into it, then stepped away for some years). Like others have said, my book reading is 100% for pleasure, and I don’t feel bad if I don’t read, except that I feel reading is healthier downtime than WoW or TV.
A key for me is having some consistent times that I read. Most important for me is that I read in bed for about half an hour before going to sleep, and I find that that routine helps me go to sleep (I have trouble shutting my brain off). I take the dogs for a jog/walk on weekend mornings, and also consistently read for a while after I get back.
I read almost exclusively science fiction with a dash of fantasy. I’m an older guy, nearing retirement, and the only factor there is that our kids are grown and I can afford a gardener, so I have more free time than when I was younger.