Fortunately, there's an important difference between last and this season's fixture schedule.
Last season there was no winter break, plus we reached the final of the league cup. The team peaked in February and by April there were signs some players were losing form, most notably Rodri and Cancelo, but also Gundogan, Bernardo...
This season we are many points clear already in January, will have a winter break and are out of the league cup. Pep and the players will be better positioned to be in top form in April and May.
85 pts are likely to be enough for the league title. IF we secure the title early, Pep will rotate a lot in the final months and we are likely to drop points, so we'll probably manage to win around 92 pts.
One reason we may drop points is that we don't have many midfielders. Imagine Pep decides to rest the likes of Rodri, Bernardo, KDB, Foden... before crucial cup games. We'll field significantly weakened teams in midfield in the final weeks of the PL, IF we are still in the CL and the FA Cup. So, we are quite unlikely to win 95+ pts, imo.