Trust me on this one: take a 'sleep vacation' weekend- plan in advance to ged rid of the kids and make no plans at all, and sit home and relax and sleep as much as you want, for the entire weekend. no cooking or cleaning or driving (freeping is OK) you will thank yourself for it.
Oh, I routinely spend an entire day in my pajamas. They’re flannel. They have little green shamrocks on them.
I’ve got another one: nap whenever possible and don’t feel guilty about it.