He cannot change to F1 anymore
Once you filed I-140, you cannot change to F1 anymore, since F1 is a non-immigrant visa, file I-140 is strong immigration intension, F1 will be rejected.
Once you filed I-140, you cannot change to F1 anymore, since F1 is a non-immigrant visa, file I-140 is strong immigration intension, F1 will be rejected.