Study and LCWRA and PIP

I am hoping someone can give me some advice. I have numerous conditions that affect me on most things, my fatigue is horrific. I am however just 45 and I dont want to sit and do absolutely nothing with my life. My anxiety is so severe my husband has to speak to people on my behalf. My anxiety is so bad and I worry about everything. But I was looking to do a postgraduate course part time over 3 years distance learning, apparently I cant get student finance due to my previous withdrawal not being compelling enough however im trying to fight this but not looking hopeful and would have to be self funded somehow. My questions are that I have a huge fear of the DWP and feel like its best not to try and study because they will accuse me of not being disabled and poorly anymore, which is so far from the truth its not funny, but I am filled with dread of the process and what they will do to me and was wondering whether anyone else can advise me. I have been offered a course that I cant pay for at the moment! But dont want to take it up if its going to cause my life to be worse and they start questioning everything. And whether I shouldn't have these aspirations 😟