I agree with everyone else here - your son would definitely not be better off without his mum.
Whatever your recovery plan is- write it down. Look at it. Then accept it's not been enough to keep you sober.
Keep the page tho
What kind of things could you add to what you've been doing?
write them down too.
They may be uncomfortable things or things that take you out of your comfort zone, sure - but how badly do you want change to happen VW?
D