Have you ever planned a breakup and known when you will break up with the person ?

For me personally I have alreayd more than three reasons why I will soon end it with this person . For example I will soon say to him “ I think we should take a break from this relationship ,I’m not your priority and that’s fine , I want to be in a relationship where I feel like I’m the top priority and u always say you will call but then you go on family calls , you don’t have space for me , and that’s fine and then when we do call I just get bits of u I don’t get the full you”