Tori, this is also my first year, I did not do much in the likes for "preparing" them for brumation. I simple took them out of their enclosure put them in a small breeding box with aspen and a water bowl stuck them in the basement for a week and now in my crisper of my fridge. I used my fridge controls to change the temps from there. I started at 46 now im at 42 gonna keep it there. They have been in there for almost a month I think.

Long of the short, I think you snakes are fine and you will have no trouble brumating them.