Help figuring out 1 month old bedtime with older sibling

So I have a 3 year old, we start bedtime routine at 7:30. Shes usually asleep by 7:50 or so, I lay with her a few mins after she gets all ready for bed and she falls asleep. She lays in our bed then I’ll carry her to her bed after she’d asleep for the night.

I’m by myself most nights with the kids so I bring our 1 month old to our bed too and nurse her while I lay down with our 3 year old for a few mins while she falls asleep. Baby falls asleep every time I do this

I have things to do after our 3 year old is asleep, so after I bring her to her bed I clean up the house a bit. Usually I bring baby back out with me and try and get the house cleaned up a bit then get myself and baby ready for bed, so I’m usually getting baby and me ready to go to bed around 9-9:30

So my question is, should I keep baby in our bed once she’s asleep around 8 for the night? Or get her up for another hour or so before I go to bed for the night?

My 3 year old wakes up around 7 am but my husband gets up with her, baby and I have been “sleeping in” til 9 (I have baby all night). But baby has been seeming ready to get up before then no matter when we go to bed, so I have been thinking of bringing our bedtime up (we were going to bed later) so I’ll feel rested enough to get up earlier, I just don’t know how really with our 3 year olds bedtime

How do you handle bedtimes with baby’s and older siblings if you are parenting solo for the night?