<human>: Can you summarize the given text in a few sentences?

Sorry for the obscenities, but damn. I'm seventeen, right? So I'm a few months away from graduating and I'm STILL dealing with splitting my time between my two parents. They get along fairly well most of the time, so they've forgone any custody papers/rules except for abiding by the time chunks set by them. I'm with my dad the majority of the time (three weeks in four). Because of all of this informality, they often get dates confused with regards to who I'm supposed to be with when. This inevitably leads to them making a plan while I'm supposed to be with the other parent. Then they realize (though they never admit that it wasn't their time to begin with) that they made a time mistake. So then I get told I can "do what I want. You won't be stepping on my toes if you choose to stay with your father/mother during this time." 

But that's not true; regardless of what they say, I do actually end up stepping on toes no matter what the fuck I do. And that just seems a bit ridiculous considering the short time I have left until I have NO custodial schedule.
<bot>: My parents are the best, most of the time. But instead of keeping track of stuff I have to deal with the extra stress when I really don't need it.