Again I haven’t given GMAT yet. Though prepared for CAT got decent score in serious 1 month of prep. 10 years ahead now wanted to grab one MBA/PGDM.
While I gave mock got 530 range ( V77 Q78) skipped DI as I was bored( can count as half hearted attempt).
Phase 1:
I’m currently using GPT 1 pager summary for each Quant topic and question types (MECE). Helps you finish the quant subjects in a week or so atleast provided a wide angle Qtypes and fundamentals.
I’ve realized GMAT has strong emphasis of accuracy, before you apply shortcut ensure to know core concept of the problem.
If you get the question wrong understand where you committed the mistake. Use the pager of quant to revise and do three.or more such problems to train your muscle memory.
For verbal I’ve haven’t deep dived yet. I’m sure forum will have better suggestions.