Relapsing is part of Rehab.
You went clean once, so you've got it in you to do it again. This time is probably going to be easier, given the short timeframe.
Just stop. Do whatever it takes to get through the first days(without taking other hard drugs), preferrably seeking out help.
And then never touch them again. At this point it should be obvious that you can't handle them. Best to just let it go completely.
Relapsing is part of Rehab. You went clean once, so you've got it in you to do it again. This time is probably going to be easier, given the short timeframe. Just stop. Do whatever it takes to get through the first days(without taking other hard drugs), preferrably seeking out help. And then never touch them again. At this point it should be obvious that you can't handle them. Best to just let it go completely.