Just starting out

I am 67. Started at 1800 cal. Now down to 1600 cal. I drink Unjury (protein drink) each day . I don't eat any wheat or wheat by products (Wheat Belly) I do eat eggs, chicken, lean meats, vegetables, salads with lemon juice dressing and just few fruits. I am on treadmill now for 15min. each day started at 10min. Starting slow. This might work if I can work on the Hardest part of my body (my brain's determination to stick to it). Diabetes, High BP, High Triglycerides, Sleep Apnea, Cholesterol meds. so this is a must to succeed . I feel great with all my problems but all it will take is one big problem and all hell will break out.