Feeding tube and trach after throat cancer treatments

My husband was diagnosed with throat cancer in November of 2021. He went through 2 rounds of chemo and radiation. Currently he is cancer free but he has a feeding tube and trach and has lost most of his voice. He has constant mucus and phlegm. He is also dealing with a lot of acid reflux from the Jevity that he takes in the feeding tube. He has tried many different drugs for acid reflux but nothing seems to help. It would really be great for him to get some relief from the constant mucus and the acid reflux.