I don't think, Napoli will drop points before the end of this year because their coach is doing a great job in the team that will make Napoli to remain in first position until they win the Italian league title.
nothing is impossible. Napoli will still be up against some strong teams. Atalanta and Udinese and a few other teams before the end of the year.
there are also 2 matches in the Champions League. sometimes teams become unfocused in the game when they are too tired. but hopefully, Napoli can overcome that. they had fought hard not to be defeated. of course, they will try their best for the Serie A title.