Xavi task is still not finished because Barcelona still has a match against Espanyol that they must win. Xavi must think of a good strategy for the Barcelona players and not underestimate the strength of Espanyol, which is likely to be difficult for Barcelona to win. After Barcelona wins this match, the position of the top points in the standings is further away from second place and more difficult to catch.
This match will be quite easy for Barcelona if you look at the quality of these two teams on the standings where Barcelona is at the top of the standings and Espanyol is the team that is in the bottom zone of the standings. indeed anything can happen in that match but know that this match is an important match for Barcelona because they can lock the Laliga trophy in this match if they win this match.
Therefore I think Xavi will maximize this match as best he can for them to win, especially Espanyol in their last 5 matches they have not performed too well which Barcelona can maximize as a loophole for them to suppress Espanyol from the early minutes. I think Barcelona will score early because Espanyol's defense this season is quite weak.