The Celtics are 7-6 in the last 13 games, good for 8th best record over that time. OKC and CLE are both 12-1 over that span. But point differential, the Celtics are +7.6 per game, good for 4th best (OKC is +14.7, CLE is + 12.6 in that span).
They are a 0.500 team over the last roughly 1 month. To have a bad month, or really a flat month, by itself does not concern me. It probably happens to many teams trying to repeat. But there has to be a moment here fairly soon where this team either elevates itself to where it needs to be or they aren't going to repeat. Other teams have gotten better and perhaps more importantly, hungrier, than they were last season. The Celtics need to be better and hungrier than last season too if they want to repeat. Easier said than done.