I too am on a once a day sprint. I use a similar technique. I have one Scrivener project for my posts. I create a folder/doc for each topic I want to write abou

I too am on a once a day sprint. I use a similar technique. I have one Scrivener project for my posts. I create a folder/doc for each topic I want to write about, usually 5-15 ahead of where I am. In each one I jot down the idea. As the week progresses and I find supporting info I drop it in there. Then when it comes time to write the article I have enough to go on.