You don't need to retell the whole thing twice. Just enough for readers to see the connection when they get to Acts. If Anver is going to appear at the beginning of Mandates to rescue Kha, make it clear in Acts that he rescued Kha. You can tell the common events from two totally different perspectives (how Kha experienced it vs how Anver experienced it). As written, I knew there was a connection, but it wasn't obvious enough to help me understand the timeline, which caused confusion and frustration.
Right now you have Anver as the POV character in Mandates for the opening scenes, then he totally disappears, which comes off as a poorly written opening to a huge saga. I suggest you don't make him the POV character at all in Mandates. Tell the disaster and rescue entirely from Kha's POV. It's his story. Gives us his thoughts and his struggle to be rescued and recover. Keep the story in Kha's POV until he leaves the school. In Acts, give us only Anver's POV until Kha leaves the school. If you want to include a timeline for readers, that's fine, but the stories could each easily stand on their own.
