>>396456214
Start by eating less, then switch your diet to things you have to chew more and things that are higher in protein. Make sure your meals are well rounded (as in have protein, carbs, and fats) so you actually get full from them.
After that it's finding a couple of vr games you can grind out. A hard one like pistol whip, thrill of the fight, creed, or something like that which requires a lot of body movement; and some other ones that require a little bit of body movement that you can do for longer (ie: not sitting vr games).
Then it's just time and sticking to it.