Week 1: The Weak Area Patch-up
Spend this week fixing only those topics where you are getting negative marks consistently. Don't start anything new.
Week 2 & 3: The Mock Blitz
Take 2 mocks per week. Give them at the actual exam time (2 PM to 4 PM). This conditions your body to be most active at that time.
Week 4: Revision and Calm
Stop taking full mocks 3 days before the exam. Just revise your GK notes and basic formulas. Sleep 8 hours every night.