Wow! You two are going through rather a lot! However, it is very early days.
I don’t have a similar story to tell as my DAVF was found before bursting. However, there was a wonderful documentary on TV here a couple of years ago about a guy who had a massive stroke and his recovery from it. It took a long time (4 years) but the contrast between his initial condition and the degree of recovery he achieved is, I think, the most encouraging. It’s a hard film to watch – especially for you – but if it is ever helpful to see what perseverance can do, it may be helpful. My Amazing Brain - BBC Horizon - #2 by DickD
I’m sure your husband will get back to a much better position and he has youth on his side.
I hope this helps,
Richard