I think the advice sounds fine. There isn’t loads the NHS can offer given he isn’t currently drinking. A lot of services are focused on safe detox for people who are alcohol dependent (would have withdrawal symptoms from stopping).
It sounds like if he hasn’t drank for the past week, he’s gotten himself through that bit, which is great. The really positive thing is that it sounds like this is all very recent (a few months rather than 10 years) and that’s a good sign in terms of getting himself back on track.
He has to make his own mind up, but it’s worth considering the offer of antidepressants. They helped me temporarily and I came off them when I no longer needed them.
Most options to support people who want to quit drinking are in the private sector or through peer support. There is so much out there and it’s not expensive, so really accessible. He might seek out a men’s alcohol support group (many groups are heavily women, which is fine but he may feel more out of place there). Or go to AA. Both free.
He could also seek out a therapist or a sober coach privately. There are lots of books he could read and podcasts. There are Facebook groups. He just has to look around and find what feels like a good fit.
It’s absolutely possible to have a fantastic life though. I drank heavily for 20 years. I was drinking about 200 units a week when I quit. I didn’t use any NHS services at all. I stopped totally by finding a support group online and changing my lifestyle, reading books, listening to podcasts, meeting other sober people. I’m 2 years sober and a few months now. I’ve never looked back.