Detox followed by minimum 60 days in patient treatment then outpatient treatment for a significant amount of time.
Very very rare for a heroin addict to kick it just by taking methadone or even suboxone.
Most methadone clinics are just places for addicts to meetup and exchange drugs and sell methdone off to dealers.
At least the 8 mg suboxone strips, in theory, can be used to wean off by cutting it down to 6 mg then 4 mg then 2 mg....
Your assertions are not supported by data.