A subscription to Uworld SAT prep. It is both from content and technological perspective the best platform I’ve researched. It will give you solid review of things you may have forgotten and then can be tailored to focus in on areas of weakness. The price is fantastic, too. If you look into it now and make it part of your daily habit, I suspect you will be solidly ready for a 1st SAT in March and a 2nd if needed during the summer.