Down 3.5 games isn't bad at all considering it was over 10 not too long ago, but it was down to 1.5 last Sunday.
Playing the worst team in the majors for 4 games, and you end the series by losing a game to the Mets and to the Phillies (who just swept Miami in 4).
Catching the Mets will be determined by Acuna imo. If he continues to be just a good, but not great player, I don't think it happens