He may not have the time to come to modify the ball every time. The ball is not in the care of him alone. He did not have the time, you may want to have a family member take care of, so he was not able to do much better.
He may not have time to rearrange the ball every time. The ball is not in custody, he had no time alone, it could be a family member care. So he can not very well done.
He may not have the time to modify the ball every time. You are not in charge he was alone, he didn"t have the time, may need to be members of the family care. So he can"t really did a good job.