Eshwar... Sorry about your dads health, however please don't give up. Maybe the drug they are giving him will stabilize him enough to allow him to heal and regain some weight and immunity. Has he been on Erbitux? As it is supposed to work better on non HPV related cancers. You are an amazing caregiver and being localized is still a good thing.

As for diet - here's a place on he web called drink your meals - its run by a member from here - it looks at healthy high protein recipes for peg users and smoothie drinkers. Check it out. It's free I cancer patients. Hugs and good luck! And try circumen caplets if you aren't see if you can mix it in and feed it through his peg (if he has one) and if it's allowed or throw it into a smoothie or soup. Take care!