Try to give it a good thought. It isn't easy being a teacher nowadays. Work really never ends and a burn out is easy. Our mental well-being comes after the students'.
What is the pull factor from your current employment to take up teaching? And what is your expected salary? pay won't be a lot for mid career switchers doing the
NIE stint. Doesn't matter whichever masters degree you have got because that is not taken into consideration for promotion once you are a full fledged teacher. However, first promotion to the next grade would be faster for mid career switchers. I have friends who did mid career switch from pte sector. Is drawing 5K plus after 6 years of service? If that's not okay for you, don't leave your current employment.