it sounds like you're doing all the right things,and even if he's not feeling too great right now im sure its going a long way to helping him, everyone has low times and he's very lucky to have you their to support him.he may not be feeling too good but he might have been feeling much worse if you wasnt their for him right now ...good on you,be proud of yourself im sure your Master is dont feel you're doing anything wrong .

and look after yourself as well