Dr Gabriela Franco in Polanco specializes in Invisalign, you need to be in the city for at least 3 weeks for the scans and receiving the initial aligners for fitting. The rest of the process can possibly be monitored remotely depending on the complexity of the case: https://www.nomadoc.com.mx/en/doctors/dr-gabriela-franco-dentist-veneers-invisalign-mexico-city-6453368