We have five kids (2 months to 8 years), so yeah, I know what that's about. Due to the birth and my wife's ensuing complications, I've been off my bike since late October. The time of interrupted sleep will pass eventually. I don't suppose you have a trainer? If yes, you could just take 20 minutes of that for some activity, and you wouldn't have to leave the house. Personally, I don't need as much sleep as some others do, so that works better for me. Also, our kids have all slept through the night at two months of age, which I understand is pretty rare. I'm looking forward to riding again once the ice is gone (about two months). I'll say it again - this time will pass. Take it from someone who's been there four times (yes, four - the twins throw off the math).