I fell pregnant with DD1 when DS was 11 months old. My pregnancies were very similar. I showed a bit earlier with DD1. I'll pop the labour and delivery times of each birth below

I fell pregnant with DD2 when DD1 was 5 months old. I expected to show a lot earlier considering it was my third baby and because there had not been much time between pregnancies, but DD2 was shy and didn't show much for quite some time. Once again the pregnancy was pretty similar to the others, although I found it was my hardest pregnancy as I also got sick a few times, plus also chasing after a toddler and baby already was quite exhausting.

DS:
Labour 9ish hours
Pushing 1.5 hours

DD1:
Labour 3 hours
Pushing 7 minutes

DD2:
Labour 1 hour 45 mins
Pushing 5 minutes (three pushes, lol!)

For me each birth got quicker and easier. My Ob didn't even make it to either of my girls' births, and midwife didn't even have to touch me or the baby for DD2's birth as I delivered her 100% myself