"Most?" Not so long ago, he'd want to know what her weaknesses were so he could exploit them. That doesn't feel like his motivation now.

"Enough." Enough times to learn how to stop bolts with both the force and a lightsaber with almost unerring accuracy (except for when he's being distracted by multiple opponents, as happened recently). He preempts her reaction to his answer. "Don't pity me. It was the fastest way to learn."