Just say “It’s not working” and end it yourself.

So example, I always assumed I would be the one to break up with my BF, but when he broke up with me first it blindsided me. And you are always on better emotional/psychological footing when you are the one to make the decision rather than passively wait for his decision to dump you.

Like why would you let HIM decide on YOUR romantic future? Who does he think he is? Don’t let him give you a month of waiting around (how arrogant of him!). Tell him now that you see clearly and “It’s not working”.