I think you have given up too easily, by giving in to UAS flying and not concentrating on your studies.
Remember a respected airline recruiter, such as BA, will look at your CV and wonder why you only did 1 year? Was it because you couldnt prioritise your studies from UAS, give up too easily, cant commit? - my point is this could look negative.
Even if you have the money, NOW is NOT the time to start flight training as job opportunities are very few. There is a massive pool of flight school graduates looking for jobs. You need to be waiting atleast 2-3yr from now before even considering commencing flight training.
I would recommend finding another degree at uni to study, or continue aero eng, or repeat your first year - and continue with UAS but prioritise your studies better.