Depression is tough. Being a good partner during it is really hard. Make sure youre taking care of yourself while you're trying to help him.

SSRIs are different for everyone and its important to evaluate how they might be affecting him with a professional. Keeps encouraging the therapy!

Alcohol can also affect the way SSRIs interact with their mood. It may provide temporary relief for the tough feelings but it will in, nearly all cases, result in a dependency cycle. It will bring his mood down and have him wanting more to readjust.

I'd ask that he abstain until therapy and meds can be evaluated/adjusted if necessary. Its a tough ask when things are that dark for someone, but it would be helpful to go into therapy with as close to a baseline mood as it can be.

There's going to be better days and worse days. For him and you. Try to help each other through the next few months. You might be pulling more emotional weight, but don't look at it that way if it can be helped. Something easier said than done.

Good luck.

(Obligatory: I’m not a psychologist/psychiatrist, but I’ve been in your husband’s shoes, and all of the men in my family are living with depression)

First, thank you so much for even sticking by your husband and reaching out to find ways you can help. It is all too common that people get frustrated when their significant other is trapped by depression and push them away or don’t seek to understand. Your husband is a lucky man. 

On the flip side, supporting someone in difficult times like this can be taxing. Don’t feel guilty for seeking your own support, such as your own therapy sessions with a psychologist. Supporting someone else becomes so much easier when you also have a system behind you as well, rather than going alone because they are the ones with depression.  I did not do myself any favors by essentially doing what it sounds like you are doing, but for my ex-wife, being her safe space/anchor while she worked on her general anxiety and a lot of suppressed childhood trauma, but it took a huge toll on me as well, basically ignoring my needs because I was dedicating everything to her. 

Some context on my opinions here: I was someone who was a “gifted kid” (advanced classes in school, extra curricular activities, science summer camps, etc) and lived almost 30 years without an ADHD diagnosis because it was a dirty word back when I was young. Today I’m living today the related depression as an adult when it’s hard to keep up with things “normal” people take for granted and a lot of social anxiety from a difficulty forming strong lasting relationships.

I’d like to offer some suggestions that may help, some of which have helped me, while others have helped my family but weren’t successful for me:

• Therapy: all three of us in my family have our own therapist, and we all have our own cadence for that. Sometimes being able to speak to a neutral third-party is easier than talking to a loved one, because they may still be unconsciously trying to hide their “weakness” from those that they love. Also, if your situation allows, try “shopping around” for a therapist, including trying a psychologist (not sure if your country has the distinction, but in all of the places I’ve lived, a psychologist does therapy but cannot prescribe medication, while a psychiatrist can; having one or both can be helpful).
• Try to limit his use of alcohol as a self medication, it’s one of the worst things for you if you’re already fighting depression, as it just reinforces the depression mindset of feeling stuck and listless. If he’s resistant, try suggesting things like non-alcoholic cocktails/beer, which can help by continuing the “routine” while replacing it with something of a placebo effect
• Medication isn’t for everyone, and even if it is right, not all anti-depressants or ADHD meds are the same. If he hasn’t already, I encourage you to speak with your husband and medical provider about trying other options. My dad went through about 5 anti-depressants before he found one that felt right for him
• break routines: one of the hardest things for me is breaking out of a downward spiral that can be weeks in the making. You mentioned that you’ve tried to get him to do this, but I encourage you to change tactics (e.g. instead of asking him to go for a walk, tell him you’d like to check out something he’s interested, like a museum or concert or whatever, but you’d feel better going with him there to guide you. It gets him out of the house and might give an ego boost as he’s able to share something he’s passionate about with someone he loves)
• Celebrate even the small victories. When your husband is able to do those small chores you mentioned, show him that you understand how hard it was for him and that you appreciate his effort. Try to align these with his “love language”, be that words of affirmations, gifts, or whatever. But when he can’t, while it will probably feel frustrating, try not to let him see that, and instead meet him with that same compassion and understanding 

I wish you the best of luck, it’s not easy for anyone, but like I said, your husband is a lucky man to have someone so loving at his side.