Bute does not work in that short of time and its awful hard on the tummy. Dont do that.

You say he ignores you. He needs a good WHOPPIN' on the behind with a long rope or rein EVERY TIME he ignores you. He has your number. Make the right thing easy and the wrong thing difficult. Be prepared to spank him everytime he ignores you. Pretty soon, all youll have to do is lift that rein and he will move.

Dont change his bit. Dont change anything other than what you are going to do to get his attention. If you want to introduce a bitless later, go for it, but for now, focus on his laziness.