I agree with you that Juventus can't rival Inter Milan for the Scudetto title this season because of their point difference in the league table. Also, Inter Milan is not looking weak; they are winning their matches in the Serie A table, which makes it hard for them to get a rival this season. Just as you said, Juventus should focus on maintaining their current position in the league table so that Bologna will not overtake them.
Juventus' goal for now is just to be able to get a ticket to the Champions League while remaining in their current ranking. And so that Juventus can remain safe with their current ranking, Juventus must no longer waste any remaining matches this season. Juventus must continue to collect points and not lose points.
It is certain that Inter Milan this season will win the title in Serie A. So for now the focus of Milan, Juventus and Bologna is that they want to remain in their current position and make a bigger difference in points with the team that is ranked 5th. But their position Bologna is currently slightly threatened with Roma who are getting closer to them in terms of points. Roma is currently only 3 points different from Bologna and this could be quite dangerous for Bologna who are struggling to get a UCL ticket. It looks like the battle for UCL tickets will be quite fierce between Bologna and Roma. And if they are careless then Juventus could be dragged into the competition. Because Bologna and Roma could replace Juventus.