you'll be fine! last year I only boiled on the weekends! I'd keep sap from sunday afternoon/Monday a.m and boil it on Friday or Saturday night! I piled up snow around the tanks towards the end of the year. I didn't have any spoil! I was still able to make some close to Fancy grade syrup with it! if the temps are below freezing or right around it, you're fine for a while! also, you may want to think about throwing away the ice that forms in the sap sacks/tanks! that is pretty much just water... barely any sap if any at all in it! Sugar takes much longer to freeze then water! some on here call it a poor man's R.O!
Awfully thankful for an understanding wife!
“The only place success comes before work is in the dictionary.”
- Vincent “Vince” Lombardi
Good luck to all!