Making up a daily schedule has been really helpful with both boys. For both, we started without using one, and about two weeks in (for both of them) we started using them. When they can see what the day will be like, that at the end of the day the routine is the same, that we do what we say we will do, and that fun stuff is what gets cut out when misbehavior runs long, they seem so much more at ease.
We use a computer program to make the schedule now, but with Jude, we just drew them by hand. Some days we use stickers to mark which activities were completed well, and others we only use verbal praise.
Maybe this will be a help for your family, maybe not, but I wanted to share because it has worked so well for us.