Dropping out twice

Hi, I'm 49&a single parent carer to my 17yo disabled daughter. My oldest(20) is at Uni in 1st year. I'm currently unemployed, claim uc&have limited capability for work due to past mental health issues and caring responsibilities.I studied the 1st year of a Hnd in 1994-95.I was failing the course due to the passing of my bf in December 94.I was advised to resit my 1st year. Back then tuition was paid for and I received a grant based on my Mums low income as she was also a single parent. I started the 1st year again & had a maintenance loan of £1200.95-96 from slc, a few months in I suffered a miscarriage and withdrew from the course.I never really earned above the threshold to pay back until 2000&believe I paid instalments a few years b4 I got pregnant&was made redundant the same day I found out. I deferred my loan til 2003 when my daughter was born&continued to defer on mat leave. In 2005 I went back to a different Uni doing a different course entirely, 1st year was a foundation degree leading onto the 2nd Yr of a BA(hons) I applied as a single parent as by then her Father had left but by Jan 2006 he suffered a nervous breakdown and was sectioned so I was struggling to study with no child maintenance and helping him out as my child's Father with visits.Around the same time my Dad (living in Scotland alone I was in North West) had a heart attack so I went to stay with him to look after him recovering when he came out of hospital,he needed surgery so I was away longer than expected&I could no longer afford to study. The gaps in teaching from absence meant I was failing so I regretfully withdrew from the course before the term 2 finished but looking at my account tuition was paid for the full year despite leaving in Jan. I think I applied to the hardship fund so I didn't receive an overpayment but I went back on benefits as a single parent once funding ran out&worked part time so was up to date tax wise with hmrc. I have spent the last 19 years working part time as my 2nd child(born 2007)is disabled and I was her ft carer. She now attends fe college pt&my oldest HE Uni ft so although I have gcses and Alevels and worked as a manager prior to having children I'm now struggling to find work with a decent salary and want to finish my education.Either studying a Bsc(hons) in Psychology or Mental health nursing. My 1st loan was due to be written off in 2019,Ive not had any correspondence for years from Honours who bought the loan and can't find records so hope so. I still owe £3500 from 2005 1st year loan but have deferred or not earnt over the threshold since.As I only had 1 full year of loan funding 19 yrs ago&its now 30 yrs since I failed, resat then withdrew I don't have a Hnd or Foundation degree qualification&am wondering if itll still be possible to receive funding for another 3 year course? Without full tuition and maintenance loans I would be unable to afford it. Obviously studying this degree if I'm accepted would enable me to earn a graduate salary which would mean I could pay it all back rather than my income never reaching over the threshold and existing loan being written off in 10 years receiving nothing at all back but I'm not sure it works that logically
Please can you advise, tia 😊