I would present the plan to your doc.
Are you taking any meds - thyroid, blood sugar, blood pressure?
Are you taking the supps the plan calls for?
Have you been to your doc for a full physical lately? Blood work - the whole 9 yards? You may want to start there.
IP is NOT the last plan or only plan that works - everyone is different. This isn't the only way to lose the weight. Do not give up! You may just need another plan.
Keep us posted!