Partying with baby on the way

So we’re 4 months away from having our first baby & my partner has been experiencing quite bad anxiety & depression (mainly to do with work, the baby and worried he won’t be a good dad).

His way of dealing with this is going out and getting absolutely written off with his friends (around once a week- used to be 2-3 times per wk before ttc) and will only think to come home once I call him (the other week it was 5.30am..). He gets so drunk sometimes he can barely make conversation. This of course makes the anxiety and depression worse because I get really upset/ annoyed that he’s leaving his pregnant gf at home while he’s out living his best life & I feel like the nagging gf when I ask him to come home/ explain how it makes me feel.

Prior to conceiving he promised he wouldn’t do this so it all came to a head on Friday night when it was all happening again like Groundhog Day. I’ve told him that I’m serious about moving out if he doesn’t seek help (I’ve been asking him to see a GP/ councillor for a year on and off).

He admitted that he needs help but feels cornered because I’ve asked him to stop drinking while I’m pregnant because I’m over it. I don’t want this continuing when our baby arrives & it’s seriously effecting our relationship. He finally went in & took a test for depression at the GP’s and said he rated very highly (thankfully he’s not having thoughts of self half but has been self medicating with alcohol/ having regular binges).

I’m just after some advice on how I can help when it’s effecting my mental health too because being pregnant I’m really craving support & attention but he just wants to be alone with his thoughts/ play video games which is different to how he was in the past.

Also would love to hear from people if they have been though something similar & worked through it with support and/or treatment.