There is no proof of that. There has never been any proof that such an action was planned or scheduled. He never reported any direct threat by anyone. His actions, he stated, were without authority or known threat only his own fear.
"Beuragard wanted to make a name for himself and thought his battries should be tested against an unwilling foe."
Beuregard had instructions to not allow the fort to be reenforced. His options were few, and with the size, type, and tactics that were going to be used against him by the force coming towards him he was afraid he could not carry out his orders. He already knew, by testing his guns in the harbor, by the terrible results of the Charleston gunners against two moving vessels, the Star of the West, and a misfortunate uninformed ice barge, his defences could not stop a moving vessel, especially in the dark. When the fleet arrived off the entrance to the harbor on the night of the 11th, Beuregard had to use the best strategy to insure that Fort Sumter would not be allowed to use its full force against the defenses Charleston.
"Moultrie was not a good deffensive position"
At the time of the move Fort Moultrie had been made ready and was claimed defendable by the Army engineer who was sent months earlier to make it so. The men of the fort had been working night and day for weeks clearing the approaches, strengthing the walls, setting mines, and providing cover for the troops.