Be organised, always have your bikes and kit ready so, when the opportunity presents, you can just go.
This is key.
And once you’ve dicovered what kind of approximate routine your newborn has you will have a rough idea of when you’re more likely to get out on the bike.
For me, it was early(ish) in the morning – up and out by 7, back home by 8:30.
If you can cycle commute then that helps getting a regular ‘fix’ of cycling, so you don’t get quite so fed up of not riding at the weekends.
I am also fortunate in that my wife understands that cycling is important to me so is happy for me to go out. Works both ways too – there’s stuff my wife does that needs time for herself.
A bit of give and take from both parents and you both get to spend time doing things you like.
(Erm, we do also do stuff together 🙂 )