B's will miss him twice, assuming that timeline is accurate.
Unfortunately, the Habs game in front of Price is vastly improved and they aren't as heavily reliant on him as they have been the past 2 seasons. I don't think they'll be a complete disaster in his absence. Condon's been decent this year too. Gallagher is also out for a while with a broken hand, which is a big blow to their top line.