I'm happy to see Juventus race for the first place in the Serie A because I was predicting to see Juventus win the Serie A and I can even bet on this team because I'm totally sure that Juventus is in the good form enough and because of not playing in the Champions League like other teams do, they can have higher chance compared to Inter Milan.
Don't underestimate Inter Milan. They are also in a good condition this season. If we consider the squad quality, I think Inter Milan is a bit better than Juventus. However, Juventus can focus for the domestic competition, meanwhile Inter Milan has UCL matches. They also qualify for the knock-out phase, which means Inter Milan will have busy day in UCL against stronger teams. This is the advantage for Juventus because they only need to focus on Serie A matches. Their players must have a better preparation due to a longer time for resting. However, since Inter Milan is leading the table, they still have a higher chance to win it.
Inter is looking really good this season. Juventus is probably the second best still. They will have to improve their performance to actually get on the first position of the table. And by the looks of it, it is going to be hard because Inter is not going to make it easy for them at all. But I expect Juventus to start performing better because they do not have any pressure from other competitions as you said. So it should not be a big problem for them in my opinion to actually improve their performance further.