Hola David and welcome
With addictions I think it's necessary to move away from the routine, from where you place in your head that you need this one thing to continue - in your case for sleep or stress. My cycles with other drugs and alcohol in the past I was able to overcome "cold turkey" because I'm a stubborn "expletive" so I'm not great to give advice to all.
Some kind of professional help, a free local counseling place or hotline would probably be able to give you far better advice than I can. Might need another drug to bring you down nicer, or psychological help.