From methadone to suboxone

I was on 16mg/day of Suboxone. I went to a methadone clinic and got dosed once. Thought better of it and decided not to go back! Now I want to reintroduce bupe, but know I have to wait. It's been about 48 hours since I took the methadone and I've been using kratom to not be totally sick. How long after the 1 40mg dose of methadone do I have to wait to start the bupe? I plan on reintroducing slowly maybe 1 mg every 2 hours?