Yes he will. He has to. Maybe he'll start studying and do better next time.
Do what Hillary took time out to do.
When you reject facts and history and the public record like Trump does, "studying" is rather difficult.
It would also mean admitting he was wrong.
More likely is that he'll take a page from the "conservative" wing of the GOP and decide he wasn't Trumpy enough. So NO prep for the next debate, are more "red meat". (For the third debate, he'll try to murder Clinton on stage, then claim he was just "joking".)