I just got my new bunny today, and he's been eating out of a constantly full bowl of pellets ever since before we got him. I would like to: one, switch him to oxbow pellets, and two, reduce his amount to about a 1/2 cup. I'm not sure where to start, I don't know if I can cut his food down right to the half cup immediately because I have no clue how much he actually eats daily. I'm also not sure if I should be reducing and changing the pellets at once or one at a time.