GRE requirement for MEM course in the US

Hello All Need some urgent help, my friend is targeting masters in Engineering management in the US. Her profile is decent with 9 above CGPA in BTech CSE from SRM University and work experience of 2.5 years. But as she has recently planned to apply for the MEM programs for Fall 2022, she got a bit late and haven’t been able to give GRE yet. Most of the colleges have stated GRE as optional hence she is confused if she should focus on getting a good GRE score or instead spend time in working towards her LOR’s and SOP. Anyone who has followed a similar route and got an admit from the universities (list is below) please DM me. 1. Duke university 2. Cornell 3.Dartmouth 4. USC 5. Northwestern 6.Purdue university 7. UIUC (MS in technology management) The deadlines are coming close. Please provide any information regarding this. Thanks, Dhruv