Honestly, he could do a lot of good environmentally, cruelty-wise and re his health just by eating a little less meat. A great way to do that is to watch some read or watch some chefs demonstrate a high-end, easy to make dish, not to look at a 70’s beans and short grain brown rice vegetarian cookbook. Have some GOOD food instead of depriving yourself.
There’s actually science behind it. Not hitting the exact moment, but the ~3 am wake up