Re-Align Max Central Incisors and Finish Case

Hi, I have a female patient 18 yrs old who is 12 months into ortho, and I want to finish the case ASAP as she is moving away for University in June 2022. I've found the 11/21 and 31/41 teeth have irregular shaped teeth with respect to their interproximal height of contours. This is causing the 11/21 and 31/41 to look like they have diastemas, when they do have tight interproximal contacts. Last visit, I did re-position 11/21 brackets to promote torquing the roots distally. It's had some effect, but still seems to be looking like a diastema (though it's tight to floss towards the gingival). Can you give me some suggestions to finish this case? Thanks!