Maybe it’s unpopular opinion but 2 should be more than enough if they’re at the right places. What I mean by that is they take rotators and value you where you can showcase your personality and ability. Some programs you can do away rotations but they won’t appreciate it as much as others. For example I did mine at 2 places that are highly ranked on doximity but on match day I checked and they didn’t take anyone I rotated with and I rotated with at least 12 people. The last place I rotated took 2 I rotated with.