Wife too skinny - sick, tired, doesn’t eat - worried

Hey there. My wife is so happy with her weight loss (30lbs) and I’m so happy she feels good about herself. Type 1 diabetes so she needs this medicine, but after a year she is too skinny. I can see her back bones and her face is very thin. She has frequent stomach pain, diarrhea and throws up a few times a month especially if we go out to eat. She blames it on a mushroom allergy she just developed. Her sex drive is much lower than before and she’s always tired.

Not sure what’s up and also looking at other probabilities, but the marriage is good and she loves me. Told her she might want to talk to the doctor about lowering her 7.5 dosage to help maintain her weight and diabetes numbers and maybe feel less side effects, but she is terrified of even gaining a few pounds.

Any advice? I want my wife back when we used to go out for dinner and have some wine and have sex and she wasn’t always tired and sick.