How do you all do it?
Tell them you'll let them know when you have time to see them and that the more they hassle you the longer it'll be before you make time.
People don't get to insist on access to your home and your time. That's ridiculous.
You need to start saying no.
"That doesn't suit us"
"We're busy this weekend"
"Afraid I don't know what we're up to the week after but when I do I'll let you know"
"No, like I already said, that doesn't suit".
"Ooh, babies need me now, best get off the phone..."
It's your phone, it's for your inconvenience, not theirs. You don't have to answer it.
If they show up, you don't have to answer the door.
It's wonderful having involved friends and family. It's only stays wonderful when it's by mutual agreement and everyone has a nice time. If they're hassling you, it's not fun.