That's right, Dembele has been very impressive this season. He's fortunate not to have missed many matches due to injury. I think his goal tally will continue to increase, considering Ligue 1 still has 8 matches remaining. PSG is also very likely to reach the French Cup final, which means they will play 2 more matches there. In the Champions League, it seems Dembele will be able to score at least 10 goals this season, assuming PSG reaches the semi finals. If PSG manages to win the Champions League trophy, it's certain that Dembele will be included in the list of Ballon d'Or candidates.
This happened because he was able to avoid injury and I don't think Dembele's best ability was entirely due to Mbappe's departure as most people have said. PSG did get a little better after Mbappe left and they didn't make a setback despite losing Mbappe to Real Madrid. For the Ligue 1 champions, it is almost certain that it will belong to PSG because no other team can catch up with their points.
But if we talk about winning the Champions League, it might still be quite difficult and even if Dembele becomes a candidate for the Ballon d'Or, without winning the title, he will not be able to achieve it because there are several other players who might have a much better chance.