How much is too much?

I'm trying to get into a daily rhythm where I write my blog, then go on to other things that make up this life of mine. I usually get up at 4am and write my blog sometime between 4 and 7am. Then I have breakfast and get on with my day. But sometimes I get another idea for the blog and instead of sensibly writing down the idea for the following day, I usually have to type it up immediately and