How long will it take an othodontist to make space for implants? I have 4.6mm. I think he needs at least 5 or 6

My eye teeth are missing and I need implants. Dr sais the soace is to small sexond opinion sais the same. I have 4.6 and need 6 to be strong or something. How long would it take to make space with braces (fastest time)?

No doctor answers yet