New to studying, bad blind score, very stressed

Hi! I just started my GRE journey today, and have a test date booked for March 7th, 2026. I took a gregmat practice exam completely blind with no studying or prior knowledge and got a 293. I scored pretty evenly in both categories and am very stressed that my goal score of 315 is not realistic by March. I panic bought the ETS GRE official general book today, the manhattan 5lb book of problems, and subscribed to gregmat. Someone please give me guidance on how I should proceed and if this is even possible?

There are study plans on Gregmat.