I left a very well paid profession to train as an ATCO some years back now. My salary was reduced considerably, we didn't get paid living expenses
To get paid a salary whilst training in aviation is rare, OK its hard if you have based all your figures on the higher salary , but at least you are getting paid, not having to pay for expensive ratings, your medical etc unlike our colleagues who have had to finance themselves.
It is an excellent career, it is but hopefully a short time that you are at the college. ATC has always attracted younger students because they are quite frankly more likely to succeed.
Don't give up an excellent career because of initial shortfalls in salary. It was hard for me to work on a reduced salary but now I can say the shorterm sacrifice was well worth it.