Major Receding Gumline, will major work need doing? (photo)

Around one year ago my gum line of the bottom 2 teeth started to recede, it continued for a several months so I decided to stop smoking, even after I quit smoking the ressesion still proceeded. I cut down on sugar in my diet and even started using corsodyl mouth wash to help heal the gums but its just getting worse. I have a dental assesment on the 5th October but I am worried it will need major work and be very expensive. Here is a photo.

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