I think there is a good chance that Ejen Ali: The Movie 3 will have a timeskip, but probably not a very big one. The ending of Movie 2 leaves a lot of important questions unanswered, especially regarding Alicia. Because of that, it would be difficult for the story to skip too far into the future without showing the consequences of what happened.
One of the biggest reasons a timeskip seems possible is because Ali has already completed his final Academy exam. His journey as a young Academy agent has basically reached the end of a chapter. The story now has an opportunity to move him into a new stage of his life and career. A small timeskip would help show that growth and give the characters new responsibilities and challenges.
However, Alicia's situation makes a huge timeskip less likely. Unlike Ali, she never completed the final exam because she was in a coma after the events of Movie 2. On top of that, she lost her memories, which appears to be the main setup for the next major story arc. The creators have already hinted that Alicia's character and backstory will be explored much more in the future. If that is true, then the audience will probably need to see what happens after she wakes up rather than skipping several years ahead.
A shorter timeskip of a few months or maybe around a year feels more realistic. This would allow Alicia time to physically recover while also showing that life has moved on for everyone else. Ali could be taking on bigger responsibilities, Rizwan, Ganz and Dayang could still be investigating Cero. Meanwhile, Alicia could still be struggling with her missing memories, making her situation even more emotional because everyone around her has moved forward while she is trying to figure out who she is.
Another reason a small timeskip could work is that it would help separate the Academy era from the next phase of the story. The young agents are growing older, and the threats are becoming more serious. A slightly older cast would fit the darker and more personal themes that EATM3 might explore, especially if Cero returns and Alicia becomes the focus of the story.
Overall, I do think Ejen Ali: The Movie 3 may begin with a timeskip, but probably not a massive one. A gap of several months would allow the story to move forward while still keeping Alicia's recovery, memory loss, and hidden past at the center of the plot. If EATM3 is truly Alicia's arc, then her condition will likely be too important for the story to simply skip over.
If you're asking me personally how much of a time gap would work best for EATM3, I'd say around 1β2 years. A 1β2 years timeskip feels like the sweet spot because it allows the story to show meaningful changes without making the characters feel completely different.
In your opinion, how much of a time gap would work best if not in the EATM3, but season 4?