I admire your persistence. I am currently a university student as well. I started uni at the age of 35. I’m now 44 and just finished my first year. That’s right - it took me nine years to do one year of school! I had to do it part time and also take a lot of time off. I’ve gone back full time and made it my focus. I plan to do my Masters after, and if all goes well I should graduate and be a registered psychologist in six years from now.
Keep pushing if you really want it. And make sure you’re looking after yourself as well. Depression is hard, but it’s treatable. Good for you for pushing through!