Maybe try writing a letter, among other things acknowledging that it was mostly your fault, since you are saying that here. Other than that, how to handle a meeting is something the other person has to be on board with, and if you try to set the terms, you are already trying to control them, which isn’t great. You may end up having to just back away for a while (like months or years) to let the feelings settle down.

Sometimes in legal or business negotiations, the participants use a chess clock (you could enlist a third person as a mediator to enforce the no interruption rule) so each person gets the same amount of speaking time. You talk while your side of the clock is running, then press the button to turn the floor over to the other person. But, that’s a much different type of situation that probably doesn’t transfer.

en.wikipedia.org/wiki/Chess_clock

If you want to try the chess clock thing, there are tons of phone apps for it, so you don’t need a physical one. I installed “Simple Chess Clock” from f-droid.org (I’m a crappy amateur chess player) a while back and it seems fine.