I made the mistake of a premature clean out a few years ago. Weather got cold for a week and stubborn me had a cold house aside from the heat given off by the fireplace. Probably burned 3-4 times the amount of wood than I would have in the boiler.I think you got this.....winter is shot.
I definitely quit prematurely, about 3 weeks ago but cleaned everything and no re-firing after that. Lol