Hello sir,
Usually a ortho treatment completes by 8- 12 months recently. And it might take 2 to 3 months for settling phase followed by retention for 6 months ( which is after removal of braces).
Next Steps
I think you have undergone extraction, so after those space closes, it will take 2 to 3 months for your treatment completion
Health Tips
Please don't force to remove before your treatment completes or force to finish it early as it might cause bone loss and your lower front tooth becomes mobile. Hope this helps you sir