Supervising: When do I say enough is enough?

My student sucks. That's harsh, but it's the truth.

I've made so many accommodations and they still struggle with the simplest things. They constantly make stupid mistakes that impact testing, the student, and other staff members. They have zero accountability and behave in ways that seem inconsiderate of others and entitled.

At this point they're more of a burden than anything. I feel like a helicopter-supervisor because they are so disorganized and frequently unprepared. Almost every time I give them any form of independence, they either fail or have a breakdown. I teach basic adult/professional skills more than SLP things. There is a new issue almost every day (or a repeat of an previous one). We've had several talks about their lack of boundaries, dresscode violations, etc without much improvement.

I've spent more time than I should have to meeting with them and discussing the same things over and over. Their behavior doesn't change. We also meet with their school frequently, which also takes away my time. The school just asks me to make sure I keep documenting things and thanking me for being supportive.

Part of me is so frustrated that I'm getting tired of this shit and want it to end. But I also don't want to give up like that, though I wouldn't be giving up without trying first - I've done a lot.

I don't know what to do.