It seems you have been wearing braces for 2yrs.Typical Orthodontic treatment last for 13-15-18months.
Why is treatment prolonged or extended . Have you been regular with your previous treatment schedules . We would need complete treatment data from your previous orthodontist to continue the treatment. It's important that you commit to complete treatment as per doctors advice and on schedule. There will additional charges to take up your case by any orthodontist. It will be wise to prepare for the eventuality that ensues. Tc