This is a rhetorical question: but one you should think about while rebuilding your pack. Why did the Pack fall apart? What needs to be fixed?
I'm reading between the lines but since all you have is another Webelos Leader, it looks like everyone else aged out and you had a recruiting failure. Perhaps that is the first thing to look at repairing. IMHO, relatively speaking, recruiting Tigers and Wolves is the easiest thing for a Pack committee to do. Unfortunately, the most difficult task for the Committee is recruiting Den Leaders for those same Scouts.
OTOH, if the Scouts and their leaders left before the end of their Webelos year, then you have a program issue and need to find a way to offer a full program. Either way, I'm not sure you're looking at one year to put a strong pack together. It takes a while to build the institutional knowledge and experience on a pack leadership committee until a pack can run on its own momentum.