I’m not a nutritionist but from my experience see if you can try to add in some good fats and carbs. I know it’s hard when you are tired and nauseous along with changing tastes. I did buttered noodles, avocado toast and small snacks when I could. I know you’re tired of peanut butter but I try to keep perfect bars on hand. Not really a fan of protein bars but these are refrigerated, healthy and taste like cookie dough! Someone had mentioned keeping weight on with the help of shortbread so I got a big tin of Walkers shortbread which is mostly butter, sugar and flour which I would take when I needed something in my stomach before I medicated. Getting good calories is helpful but make sure you’re trying to get some nourishment to keep up your strength. My directions said to take with or without food so I generally time meals and snacks around my medication schedule as that seems to work better for me. I enter everything into my iPhone, it sets a reminder and also provides drug info including interactions.