I try an write consistently, but it’s on different things. In a similar vein to @DomiSotto and @sarakbeeksma it’s usually a big project as my base, and short stories as extras (though I foresee that dynamic flipping soon)
This is very specific, but the month before the two exam seasons (December and March) are busiest for me, because I still have to be in 9-5 classes, but as an engineering student I usually have a lot of project to complete. No matter how prepared you are we end up working every weekend and evening. So…unsuprisingly, no writing. By the time the exam period comes all those projects are handed in and we no longer have class, so I have all day to study, leaving all evening to write. I actually I don’t think I work best during holidays, at least, not on days where I’m completely free. I work best when I’ve some kind of routine, or list of things to do. I find it easier to slot it in amongst other things than I do to make the most of a totally free day.
I am not doing Nano this year, partly because I don’t have the time, and partly because I did Camp Nano in 2016 with a goal of 30k, worked as hard as I could, still didn’t make it, burned out from writing every day, and the stuff I’d written was terrible and needed a lot of editing. I don’t think it’s worth it for me. However, I do understand that a lot of people really like just getting it all done and then editing later.