I am a stay at home dad recovering from AML stim cell transplant. I have been trying to find time in my day to work on a personal project that I need to develop

I am a stay at home dad recovering from AML stim cell transplant. I have been trying to find time in my day to work on a personal project that I need to develop for myself and I think has a potential for profit. However with my busy 1 year old son waking up at 8AM(sleeps all night, which I am super thankful for), I can't find the time during the day to focus on a project. I get spurts during his 30-40 minute naps and when he is playing real good by himself, but as I get focused I am quickly pulled away. I have tried to be productive when I put him down at night, but I find I need to spend this time with my wife. It is looking like I might become a 6AM coder soon. Seeing that my day starts at 8AM. I had thought about getting up this early, but I just didn't think I could make it through the day with my semi-low energy levels. However, I am thinking if I get up at 6AM, I can nap when my son naps for 30-40. As I read another post on HN that it actually is great to take these short duration naps.