My husband takes 10 cans of Glucerna a day through his G-tube since he is diabetic - 2,200 calories. Is he getting enough? Should I add flax-seed oil in his tube?

Wife to Tim Right Tonsil CA IV dx 6/24/05, IMRT 36 treatments ended 8/29/05, Chemo (cisplatin and 5FU) ended 9/16/05