i would say do kaplan's subject test on keyhole without timing yourself. PAY ALOT OF ATTENTION TO THE "DETAILS". After 5-6 practice test, you will get a hold of it. Make sure you go over your mistakes and know why you got them wrong. and Finally, you should be spending about 12-15 min on this section on the full lengh PAT test. Hope this helps.
don't panic, I will come with practice🙂