You teach your 1b and 3b how to make cutoff's. It is in all "playbooks".
It takes time, patience and practice. Watch video on the 1b and 3b handling a throw from the OF. It is "footwork" and position of the body.
Do not make excuses for the 1b and 3B - "teach, practice and practice again".
We have 45 players traveling to Australia and 7 coaches. Believe me they will know the "cut off" procedures.
Bob