Change your volume day to 3-4 sets of 5 and reset to about 345. Reset your ID to 375 x 5. Run that out as best you can and make your last really heavy volume workout the Monday that is about 2 weeks out from the meet. Your last ID approx 8 days out from the meet should be some heavyish singles across. Monday before meet should be about 3x3 at maybe 80% of what your opener will be. Do a light Squat/Bench on Weds and meet on Saturday