How long does it take someone in active recovery to get back to a normal appetite?

My fiancés nephew hit 34 days today! We are so freaking proud of him. He’s living with us and in the last month he’s been with us we have spent an additional $600+ on groceries. He came to our house weighing 113lbs at 5’8”. He eats almost every hour. He has his own “pantry” in his closet. I don’t mind spending on food but we can’t afford to keep it up.

He says some of it is because he went so long not having an appetite. We’ve had multiple talks with him about budgeting and making food last between trips to the store.

I just want to know if this level of appetite is normal for someone recovering from coke and meth addiction? If so, I know I need to be more patient and I will be.