hi Maddie,
I hope things are working out for you. I am also new to all of this so my contribution is far from an expert on the subject. I am still learning...but wanted to add something different to the mix. One of the biggest things I have had to look at for myself is:
"Is this a disability or just a bad choice?"
I have struggled with severe depression as well along with PTSD and other things. I was recently put back on antidepressants. After a month I noticed I was feeling better but found myself still in bed many days at 2pm.
I had to ask myself what I was expecting out of my meds. And had to get really honest with myself. and the truth for me was - I really didn't even needs meds anymore, I just needed to start making better choices.
like...some things that you mentioned seem like things perhaps, you can work to help yourself with a bit better and even raise questions about owning a pet.
like...if you don't feed yourself, who is going to feed your dog? If you choose to not get out of bed, who is going to walk your dog. At some point, a dog will just pee inside your home if they get too frustrated "working" at getting you up when it's really about your "free will".
and I have had to be very honest with all of this myself when I look at whether or not a PSD is the right choice for myself. What IS in my control, what can I change myself and what can a dog/robot do for me - or be trained to do for me - that I can not do for myself. I am so new here I haven't really even talked about what Luca is providing for me at this point and there may even be folks here who disagree with this being the proper use of an SD and I may have to go back and rethink Luca's "label" again...but I think I have spent enough time really being very honest with what is reasonable to expect.
making you eat is not really something a dog can do for you. never mind brushing your hair, you will now need to brush HIS hair! keeping you from getting distracted is not something a dog can help with (I don't think?) Not sure how a dog can make you less nervous - truthfully, I suspect the first times I have to introduce Luca to people as a PSD, it will INCREASE my anxiety. If you take your meds but not at the "same time", that is kind of a choice as you could rearrange when you take them - set an alarm etc. as others have said. As for motivation, my dog is "motivating me" to leave my apartment and take him for walks - but that is a pleasant side effect of having a pet...nothing "special" or skilled about that. Dogs poop and have to walked.

As for breakdown I really don't know what to say as i don't know what that means for you. if it means crying, perhaps like someone else said, your meds need adjusting or maybe just school is overwhelming...
and well, if you could train a SD to do your homework, There would never be enough to go around huh?
hope you are doing better with things. and I hope you are enjoying school. it's a time of your life that you will never get to repeat so enjoy it the best you can. take care, be.