Best of luck! It really sucks, and the worst part is it’s hard to notice at first, and easily written off as working too much or something until you realize you’re doing it to yourself. I’ve heard good things about pea protein but sadly it’s not really a thing in my country yet so I haven’t had a chance to try it.
Anyway, whey powder can be pretty cheap these days (they have cheese so dairy isn’t a restriction), and there are enough duplicates in this picture that they could cut a couple things and keep the same price point if the budget is tight.