My husband is just finishing his 4th week of radiation 5 days a week/Erbitux 1 per week treatment for throat and neck cancer. Now has significant mucus build up which keeps him up at night coughing and has interfered in swallowing. Has been drinking Carnation VHC drinks and mils shakes but wondering if the dairy is part of the problem also. Any suggestions on other foods or how to prepare them. He does not have a feeding tube. Would appreciate any information.