OAT Score Improvements?

Hi guys, I'm taking the OAT in about 2.5 weeks from now, & was wondering if any of you who have either taken the real thing or any practice tests multiple times improved your scores by a decent amount in a short period of time?

Really just looking for some encouragement! I've taken 3 practice tests & improved from a 270AA/250TS to a 310AA/290TS in about a month and a half, but I am still absolutely terrified. How confident did you feel on the day of the actual test?