Hello iso and welcome. Sorry for what brings you here. The main thing to remember is you cannot make him change. The only thing you can do is change your reactions to his behaviour. I remember lying awake worrying if my then husband would make it home in the car. I did that for years.
read around the forum. You will see that his behaviour is text book alcoholic. Many of us here have dealt with this and reading other people's stories will 1. Show you you are not crazy and 2. Give you lots of ideas on how to proceed
Put you and your child first. Try to look for practical solutions as much as you can (like getting the car insurance out of your name)
And please take support from anywhere you can get it. Are you attending al-anon?