Yes, he can, but now he won't do it because he already achieved a form, Ultra Ego, which is able to resist Ultra Instinct. But what if, Vegeta try to get Ultra Instinct?

He will unlock it easily as he is now making his mind calmer, and if he succeeded, he will unlock Offensive Ultra Instinct. Like Goku have Defensive Ultra Instinct, which is mainly use for defence and Offensive Ultra Instinct can also have a good defence and can give reply to the opponent's attack.

Stay Tuned