Just to add to what everyone else has sent.
Almost all universities do 'distance learning' courses. Now choose a course that you would _enjoy_ doing. Archeology, real-time-underwater basket weaving - whatever. It is your choice not others. Then treat the course not as most students do - as something the MUST do for their career. Treat it as FUN - that may affect your choice of course but it is really important that you don't see the course as an imposition but rather as an enjoyable hobby. Believe it or not that will increase your scores on the course _and_ take the pressure off. So then do the course enjoy it as a hobby.
At the end - you are still happily on the flight deck, you can put whatever course it was onto your CV and perhaps even do another.
I know one pilot who not only did a first degree but just as something to do carried on to get 3 different masters degrees. Just something interesting to do with no pressure if it doesn't work.
Life is here to be enjoyed - go fill your boots
