Hi, I have been in your position with my daughter, she stopped attending school at 12, though I would advise to keep in contact with school as they can offer good support,
my daughter was referred to cahms, with anxiety and panic attacks plus an eating disorder, with cahms she has one to one, has attended four dbt groups, art therapy and a lot of other things,
5 years ago she couldnt leave the house, today she got a diagnosis of bipolar type 2, and has a little job, she passed 5 gcse's with a c grade, she was with eotas tutoring who were amazing in support as well.
Things can improve, but sometimes you have to keep pushing and make yourself heard, so you dont get lost in the system.
good luck xx