Insanity workout question

Hi all! I am four days into Insanity and loving it. I'm about 75 lb overweight and am wondering if any others have run into a similar problem as me. My kangaroo pouch is seriously getting in the way of my workout!! High knees, plank sprints, etc... There's literally no physical way I can do some of these moves lol. I've been doing modified stuff and it still feels like a good workout but I'm wondering if others have run into this problem and how they overcame it, and even more, I'm wondering if you still had good results with the program if you had to modify the moves. Thanks in advance!