Need guidance on planning second half of my study plan

I completed Quant basics using the i am overwhelmed plan and im doing verbal using the 1 month plan (currently on week 3). I have given the PP1 untimed test and got 160 verbal and 164 quant. When should i do the next PP2 test and the other mocks? Need some guidance here

I took the GRE in Feb earlier and got a score of 313. I am aiming for a 320.