The mouth rinse should be 1 tsp baking SODA, 1 tsp salt and 1 cup of warm water. He should try to rinse 5+ times per day. It will help with with the mouth sores and keeping his mouth ph balanced.

I know its getting difficult but he cant quit. I tried to myself and between my nurse and son they wouldnt let me. Radiation gets progressively harder as treatments continue. It continues to work even after treatments end. Most patients struggle from the last week or 2 thru the first 2 or 3 weeks after finishing. Hang in there and focus on what is controllable... his intake. This is what will help him to get thru it a little easier. If you feel he isnt drinking enough, ask the doc for an open prescription to get hydrated a few times per week in the chemo lab. Its amazing how much better he will feel after a couple bags of saline.

To help get rid of the phlegm, ask the nurse to suction him out. This will help tremendously! He can get it done every day he goes to rads.