In essence, at this moment Juventus is at least experiencing a decline in performance and therefore, most will assume that it will be at least difficult for Juventus to return to second place by overtaking Milan. But indeed, if for example in the next matches Juventus succeeds in recovering and improving their performance then of course, Juventus will again have a chance to compete for second place with Milan. But yes, the bad scenario is that at least it seems that Juventus is still having difficulty recovering because they have experienced instability in the results obtained in every match recently. With these factors, the worst case scenario is that Juventus still has a chance to fall one more place to fourth place, but indeed, a team as big as Juventus should be able to still finish in third or second place at the end of this season.
Milan needs to put in extra work to their efforts. Their advancement in the European cup was very much a good push for them in terms of their confidence building but there's been times of less ball performances which takes till on them and it's causing setbacks in their Serie A race. This season though, they weren't really much of a strengthened team with increasing tempo as before but they tried to win games. All hope isn't lost for them as they've still got chances against lesser teams and their next league opponents. They're a good side but it'll take something extra to be a better side. For now, they've got to strive to stay in shape and in the right spot on the league table.
There are still weeks to go, no one knows if a change can be effected to the standings, one just has to look out for every team's performance. In all their strides, they never should forget that they're in huge competitive battle in the Serie A league and every moment and game count, so they've got no leisure to slack or relax or draw back in their efforts too. Though Milan's injury cases caused loopholes in the certainty of them progressing in the European contest. They tried to fight to conquer the round of 16 phase even though there was a neutral probability that they'll advance in the contest.
They're currently at a time that they'd need to put in more proactive solutions to help them out of their current predicament. In their domestic league as well, they have not really been up and doing as they're known for, their matches can't even be confidently predicted because they're lagging behind. They're not currently the Ac Milan that we know. The coach himself is experienced with them therefore there's a probability that he'd rectify the default in no time but they really have to up their game if they want to progress through this season without issue.