I've been on IP for 2 months now and at first the weight was coming off very quickly- 4#s a week...now its only 1-2, if that. I still have 54#s to go. Should the weight loss each week decrease this much when I still have 50 to go? I am following the program exactly as my doctor told me to. Did anyone else have trouble losing weight after a while ? It's starting to discourage me and no want to continue..HELP !