One thing you have going for you is your strong sense of the future. In other words, I read your post and especially your last line abou not wanting to have to wait till next year to finish class means that you are thinking of the future. Alos you can recognize the positives in your life. You feel they have no value and maybe they don't right now, but if you keep then in sight even when it feels hollow and fake, you can at least tell yourself you have something to live for.

As for inpatient, it is your decision at this moment, and you sound conflicted. I have found my inpatient stays to be beneficial. There is never a good time to go inpatient, but if you truly feel you won't make it, maybe you should sacrifice a few days, get an extension on the work for school and make yourself safe for the long run. You are thinking in the long term anyway, graduating, getting a car, etc. I have learned that to plan for the long term I have to secure my short term, down to the smallest things like what time to wake up and get out of the house and the daily things I have to do. At times that has meant inpatient for me.

I am not trying to push it, I just want you to be safe.