Compelling personal reasons following temporary withdrawal (postgraduate research)?

Hi there. I was enrolled on a one year Master by Research course in 18/19 but withdrew for mental health reasons, undiagnosed/unmedicated SPLDs and then an ankle injury. My TW was backdated to April 2019. I thus received the full postgrad loan the first time. But I now have outstanding tuition of £1836 for the 5 months I ended up not attending. My uni's disability services have recommended applying for CPR but I feel like my chances of getting it are not high at all even though I'm still going to do it, so I wanted to know if anyone had a similar experience. I am enrolled on the same course.

edit: I have seen stuff about getting funding for a repeat year with CPR. I am technically repeating the year, i.e. I started again in accordance with the normal term dates and will be extending beyond the five months I had remaining. but on record this is not quite the case.