I personally don't think it can be done - at least not without neglecting one or more of them. I always had my day job and my side projects. Once I had kids, I

I personally don't think it can be done - at least not without neglecting one or more of them. I always had my day job and my side projects. Once I had kids, I found, as you did - one had to give. It's like having 3 full time jobs, and I think you can really only handle two. I was fortunate that my side project had done well enough that I could quit my day job. But there was still an exhausting year of overlap and I got a lot less sleep that year.