Children, like you, need downtime to recharge and regroup. Schedule daily time for each person to have time alone by themselves. Establish the rules ahead of time for what is and isn’t acceptable and the consequences for not honoring the time (perhaps double time the following day). I strongly encourage you to explain this during a family meeting, so everyone knows what to expect. Start with just 15 minutes and keep adding minutes each day until you have reached an hour. I suggest starting out with everyone on their beds. It helps establish a clear boundary. Once they have honored the time and can manage themselves, perhaps, you will allow them to play in their room. Make sure they all go to the bathroom ahead of time and have a water bottle, so there is no need to come out. They can use this time to take a nap, read a book, or play with Barbies or Legos quietly on their beds. Have them gather a bin or basket of items they can choose from. The key is not to make this feel like they are in a time-out or being disciplined. It is a time of relaxation and refreshment for everyone.
Trust me, some kids will be so grateful to have siblings to play with when the hour is over!
**If your child simply cannot comply with this activity, and there are no other obvious reasons, it could be that they sincerely need help growing in self-control. This is something that is taught and a life skill that transfers to all other areas. The worst thing you can do is give up and conclude, “My child just can’t spend 15 minutes alone in their room.” It is okay if you need to go after this and really work with them.