The regulation says as following.
- An applicant who has an academic credential after graduating from a junior college or who has an associate’s degree and academic ability equivalent to having graduated from a junior college shall have spent a total period of at least 16 full months undertaking the associated program.
With regard to the restrictions on the period spent undertaking a program referred to in the preceding paragraph, each institution of higher education shall compare the domestic and foreign education systems at that level and make an overall determination taking into account the education system in the country where the applicant obtained the foreign academic credential, the administrative calendar of the educational institution during the period the applicant was undertaking the program
The requirement is TEFL certificate and at least 16 months of higher education. You may need to know whether the required 16 months can be a total of two different courses or should be one program. I think you may ask on it to TECO, Ministry of Labor, or Ministry of Education.