My husband is 16 weeks post radiotherapy. He still cant eat anything, nothing, but worse he cant even sip a teaspoon of water without choking on it or it coming straight back up. So 4-8 weeks post therapy really isn't a long time at all . My husband has epiglotis cancer, ( voicebox) cancer. His mouth is constantly dry, he is in pain today with his throat, but tomorrow he could feel better. One day he feels good the next day he doesnt. He has cameras down his throat every few months to check if his throat is healing as it should be. Consultant has told my husband that his throat since his radiotherapy treatments ended is still very swollen indeed and he WONT be eating a xmas dinner this year. He is gutted about that but he had good news this week. His PET scan results was given to us this week and his cancer has completely gone. But side effects etc go on for a long time. We have been told it could take up to a year or more before he can eat properly again
