If you're still on the hunt for a place to study Japanese or a private teacher, TUTOROO might be able to help. You can take advantage of their native-speaking instructors and tutors to speed up your language acquisition.
You can select a tutor from Private Japanese Tutors in Singapore SGD40/h | TUTOROO and communicate with them directly regarding your course of study.
See their website if you want to learn more. I really really hope this is useful.