I know exactly what I want to do when I sit down and write code and to be honest I’m spending very little time on writing code. It’s maybe 30 minutes a day, plus constantly going over ideas and research on Trello/iOS Safari when I’m commuting or I only have one hand free.
I think my productivity is not much lower than before, although there are moments when parenting gets in the way I still think it’s possible to keep making progress.