Speaking as someone who has daddy issues (he abandoned us because alcohol was more important than us) his number 1 priority is alcohol and always will be.
I can totally understand that he seems a different person when sober, BUT you are constantly living in a situation where you don't know which version of that person are you going to see today???
You may not realise it but your mind, body & soul are constantly on high alert- the sheer stress that you will experience is damaging you! You won't realise this fully until you leave him and your mind and body actually have the opportunity to calm down and rest.
In turn once you leave him your full focus can then be on yourself and your daughter. You will be the best mother you can be because you will be better in general. Right now you are in survival mode, constantly an alert.
I know from experience that when you don't have a dad in your life you don't know how good men are supposed to treat you and you generally accept behaviour less than what you deserve.
I myself am still trying to figure this out.
What I do know is that you are doing your daughter a disservice by staying in a relationship that is toxic at best and dangerous at worst!
You would benefit greatly by leaving asap and getting your life set up and in a routine before you go back to work. Start thinking about what YOU want out of life and what you want your daughters life to be like.