Foods after Pancreatectomy/Splenectomy

My husband had a total pancreatectomy/splenectomy and gall bladder removal on 8/11, so he's now a Type1 diabetic (was a Type2 for a couple of years before). He was in the hospital for 6 days. They started him out on clear liquids (1 day), then moved to soft foods for a couple of days and then put him on their "regular" diet. I absolutely understand that he needs to eat whatever he can in very small amounts, but we're definitely struggling. Nothing appeals to him and even eating small amounts causes diarrhea. I'm trying for high quality protein, low fat, low fiber foods. This morning's breakfast was 1/2 hard boiled egg, 1/2 slice cinnamon bread (no raisins), 1/4 banana, and no sugar added cherry juice diluted 50/50 with water. Can anyone offer any suggestions of what foods might be good to offer at this point? He's beginning to stress over the diarrhea because he says he has no warning and many times can't make it to the bathroom 12 feet away. He doesn't move around much, and I'm wondering how to motivate him to do more of that too? I know it will be a LONG road ahead, but today it seems longer than he will tolerate. Any advice or tips would be much appreciated!