We'll get this question in front of Phil next time we record a Q&A so he can answer you directly, BUT, here are a few tips we here at GC thought might help.
1- START SLOWLY. If you jump right in to a 6-day a week split he'll never stick to it. Start with three days a week. Maybe try a push day (chest, shoulders, triceps), a pull day (back, biceps) and a legs day.
2- DIET, DIET, DIET. Focus first on a diet consisting of lean proteins like chicken or fish. Rather than having him try NOT to eat as much, try just making healthier choices when he does eat. Instead of that beef burger have a chicken sandwich. Instead of fries on the side go for vegetables or a salad.
3- CARDIO. You've got to do at least some. It doesn't have to be running on a treadmill, it can be all sorts of things (hiking, stairs, whatever), but if he's trying to get healthier he has to find some type of cardio-like exercise that he can tolerate... hopefully even enjoy.
Hope that helps!