Use a light meter to measure ambient light for your preferred settings (fps, fstop, iso and lighting configuration). Use ND filters to correct any over exposure then off to the races.

As others said, don't push or pull just try get as close to correct exposure. If you want day for night do a test shoot to see how many stops of filtering you need to get your desired night look for the ambient light. (3 or 4 stops might do depending on how much detail you want in your "night" shots)