My wife is the same way, and so the agreement we have is only a single activity/class/camp at a time. You can play soccer in spring, but not baseball, for examp

My wife is the same way, and so the agreement we have is only a single activity/class/camp at a time. You can play soccer in spring, but not baseball, for example. The child gets to pick which activity they choose. For our younger child the conversations are simpler "would you like to take an art class or a dancing class" but still let the kid pick.