Slightly over two years - he goes to sleep around 8pm, my problem is that I tend to be very tired in the evening, too. Not sure I can blame it on him, though. I never managed to install good sleep habits. And I still waste time on Hacker News.

It doesn't seem impossible to perhaps achieve better mental hygiene (more sleep, less time wasted on useless stuff). And if I don't, the time I'll have with my son already feels so short anyway. He is going to kindergarten, so now there are only late afternoons and weekends. At the age of 5 or 6 he'll start going to school, which will probably mean even less time with him. That is only 3 years in the future from now.

And to be honest, I wasn't the best at finishing my own projects before my son was around. I still think that my energy levels will probably stabilize a bit and I'll get more things done.

Also having clear arrangements with the wife might help: we have certain days where one of us takes care of the child.

Eventually, perhaps some projects could be done together with the child? I am very interested in creating games for kids now. And ultimately I would like to build him a cool robot...