@summer1983 we read this book to my DS when I was visibly pregnant, to help him understand what was going to happen, and why I was tired all the time!
smile.amazon.co.uk/Theres-House-Inside-My-Mummy/dp/1841210684/ref=sr_1_1?crid=2QJ03Z0JXOK3D&keywords=theres+a+house+inside+my+mummy&qid=1657699807&sprefix=theres+a+house+inside+%2Caps%2C344&sr=8-1
I get what you're saying about going into the unknown though. DH and I have often thought about having a third baby, but we feel like we rolled the dice twice and wound up with two amazing kids, and we've got this lovely, happy little family unit. Having another one could chuck a grenade into the middle of that. The risk of something going wrong goes up as I get older, and it's possible that we could end up with twins, or a child with additional needs, Or it could be just fine, who knows? We've parked the conversation for now, and that might naturally park it permanently, I'm 41 in a few months so it's unlikely now that we will actively try for another one.
My relationship with DS has changed a bit. But that's inevitable as he's gotten older anyway. I was always 'his person' though, and I still am. DH is a wonderful, hands on father though, and what has been lovely is seeing his relationship with DS grow and bloom. DS often goes to him first in the night now, if he wakes up. But it's always me he comes to when he wants a cuddle on the sofa, or he's feeling poorly. What was odd, is that despite me birthing her and breast feeding her and all that, DD basically decided that DH is her person, rather than me. As she's got a bit older that's evened out a bit, and she and I have an amazing relationship, but for a few months between ages 1 and 1.5, she was very much DH's girl, and only wanted me if he wasn't around. That was hard. But I kept telling myself that I'm her mommy, of course she needs me, and as I say, things have evened out now.
It's not always easy, and it would have been a lot harder if DH and I hadn't been on the same team. But we often divide and conquer, and very much share the load between us. We alternate bedtimes, so I do DD one night and DH does DS and then the next night we swap. That way they are both used to being put to bed by either of us, if for whatever reasone one of us isn't home. DH does nursery pick up, I do drop off etc. When DD was tiny, if I was up with her, DH would manage DS if he woke in the night. You need that team work to get through the early days especially.
In terms of day to day life, I will say it got a lot easier when DS was potty trained, and we didn't have to haul two tonnes of stuff with us every time we went out. We also invested in two sets of rotating 360 car seats, one for each car, to avoid having to swap car seats in and out. They are still in use now, and will be until then kids are big enough to move to booster seats. We also have two booster cushions on dining chairs, and they both sit on those now for meals. DD gets a lot of DS's old tshirts and joggers and stuff, she doesn't care what colour they are, and she loves all things dinosaur, so that helps. They play with all the same toys, and tbh whatever birthday and christmas gifts they get end up shared. Example, DS's wooden play kitchen is currently in DD's room. DD's cuddly unicorn got adopted by DS, and is now on his bed. They currently go to bed at the same time, and are at the same nursery, so their routine is very much the two of them doing the same things at the same time. It will all change again in a few weeks when DS starts school, but we will adapt I'm sure!