I would love some advice from people on how to help children gradually learn to play by themselves.
I have a generally absolutely lovely, bright, energetic nearly four year old DS. He's lots of fun and he's generally really good at understanding boundaries and routines over bedtimes, doesn't tantrum beyond a small protest if we say no snacks etc but the one thing DH and I do find hard is he will never play by himself and wants us to play everything with him from the second he wakes up. He loves his Lego but he won't even play that by himself - we have to sit right down beside him and build him things/play pretend with the little characters we make, etc. when I took him to soft play at the weekend he insisted I came with him, and the next day we were at another play cafe with a friend and he kept wanting me to come in with him.
He's absolutely fine at nursery, a bright confident little thing that plays happily with all other kids, takes the lead etc talks to everyone when we're out so not a issue anywhere else but when he's at home with us he gets so so upset - properly inconsolable - if I even say I'm just going to sit by him for 5 mins while he plays.
How can I gradually help him to build up this? I know part of it is I feel guilt he's in nursery full time so generally I want to play with him and chase him around the house etc but sometimes I just need five mins to catch my breath/not be a knight or dragon/chase him around soft play. How do I gently build this up for him?