Another one here with decent age gaps, currently pregnant with 4th, eldest will be 16 when baby arrives.
We have no childcare so DP and i take it in turns to have 1:1 time with various kids. DP and I are 50/50.
So my eldest will go out sometimes late with DP and they'll go the cinema or picking up too good to go bags and a drive and chat. As where I'll go with him his favourite restaurants or shopping.
Hes of an age where family days out bore him now, so the zoos or museums have no interest but he will at a push come the park for a kick around and picnic or beach and fish and chips. We do stick the younger 2 in their room for a last playtime at 7, after 7 eldest has us for any homework help or chats etc, we also watch an insane amount of come dine with me together, it's been our thing for years 😂
Middle 2 are super close in age and when eldest is with friends or has friends over DP and I will split them up, I'll go play centre he'll go cinema and we'll meet up after for lunch. But usually this is just so they have time alone with mum or dad, they usually moan and ask for one another, but it's important to us we treat them as individual as one of them is ASD and we don't want the other feeling he's a mini carer.
I do some baking with one, dp does crafts and we both read to them, they both do homework and it's usually fun activities on apps or reading so there's alone with mum or dad there as well.
When baby arrives there's 5 years between her and my youngest, so I'm hopeful we can find a rhythm to accommodate them all, because I've really never wanted any of the kids feeling they've been a parent to the children we've decided to have.
I will be honest also, we've discussed growing our family with the kids, they've all been discussed with how more children will change things, as we've had looked after children stay with us (we were foster carers also!) and we've discussed the ways our family may introduce other children, such as taking in a little lad we knew on an SGO, (he remained with birth family happily, we would have loved him in our brood, however we are happy he is now in a settled place with his relatives) or adoption, which we weren't successful with.
I am currently a carer for my asd son, so I am a sahp, without that, I'd not have had more children because of the time aspect.