Famed British actor Ian McKellen bowed out of a planned theater tour on Monday, saying he was following doctor’s orders after he fell off a London stage last month. “Two weeks after my accident onstage, my injuries improve day by day,” McKellen said in a statement, according to Reuters. “It’s that I have accepted the medical advice to protect my full recovery by not working in the meantime.” McKellen, 85, was playing the role of John Falstaff in “Player Kings,” an adaptation of Shakespeare’s “Henry IV, Parts 1 and 2,” when he lost his footing and fell off the stage at the Noël Coward Theatre d…