Coming back to predictions. Here's whats Feb 2021 Visa Bulletin says about potential monthly movement.
EMPLOYMENT-based categories (potential monthly movement)
EB1 - India: Up to six months
EB2 - India: Up to two weeks
EB3 - India: Up to three weeks
So the best case scenarios for FA dates in Mar 2021 VB are
EB1I - 01JUL20
EB2I - 26OCT09
EB3I - 22APR10
In reality the actual movements will be lower than what's stated in past VB.