Honestly I have found that I have been able to complete more personal projects since I've had kids.
I have found that having too much free time as a result of having few if any social obligations lets you invest time in more frivolous things. Do that long enough and you begin to loose focus on important tasks or goals allowing you to leave things unfinished because "there's plenty of time in the future" but that future never comes.
The only thing that's really helped (at least in the early stages) is sleeping in shifts + biphasic sleeping. That provides me with ample time to do my own projects, assuming that the baby hasn't regressed for that day and doesn't consume all that time (which if I'm being very fair, has been a bit of an angel.)
Yours is immobile for a while still, try to enjoy that while you can.
Probably gets easier when they are in school. But you'll be at work then.
My oldest is 5, and we're just now reaching the point where he's wanting to stay up later into our adult time, but in my experience there are a lot of comfortable years that were better than the immobile stage.
But after the first 6 months or so there does gradually become those slots where you can pick up a project without neglecting the important people in your life.
And, if you’re lucky, one day your kids join in your projects and solder on next to you in companionable silence :)
May be a muscle you train, so to speak.