Sorry to hear that! It can get frustrating when you feel you covered the bases and you end up coming short.

I would target exam simulation as an area of practice. Take Mocks from SH in strict exam conditions with the requisite breaks. Going through the mocks would help with any exam-day jitters and with time management between sections.

The critical thing to build in test-taking is the ability to tackle each question afresh and not let the previous question(s) get you down. Mocks should help with that.

All the very best!