Sorry to here about that seems like a difficult situation. Must be hard living with such a one-minded family intolerant of other perspectives.
I haven't been on the forum for a long time. But I read this and thought I'd just give some advice.
I started the Sai program two years ago to the day with the aim of overcoming social anxiety and like you after I had gone through it once I still wasn't 'over social anxiety' the first time. I thought I hadn't let the message sink in deep enough so thought I'd give it another go. Anyway I finished it for the second time after 16 months.
Personally I don't recommend doing it for a second time I regret doing it for a second time and tbh I don't think the program should take 25 weeks. once you've got the gist of it there is nothing more you can do other than put it into practise and go back every now and then to the handouts that you find particularly helpful. Hoping that if you keep repeating it again and again it will mean you magically never have anxiety again is wrong.
What ive learned is that you shouldn't aim to 'overcome social anxiety' but instead manage your social anxiety so that you are able to do the things in your life that are meaningful. It's better to have a meaningful life with social anxiety than a meaningless one without, in that case you may as well be dead. A dead person is very good at not having social anxiety haha.
The journey from a meaningless life to a meaningful life is a long and hard one if you have social anxiety and I'm still not there yet.
Since finishing sai for the second time I continued to seek overcoming social anxiety but in the last few months I've realised that this goal is futile. Even the most confident of people get nervous before speeches, talking to pretty girls/guys or going to parties where they don't know anyone that's just being a human. The aim should be to improve the tools you have for dealing with your social anxiety so that you are capable of taking action e.g giving a presentation, talking to the girl/boy you like, going for a new job or standing up to your family
I recommend now that you've finished sai to keep seeking ways to lessen your anxiety and help make it easier to have a more meaningful life. Here is a list of things I've tried:
If you can find a therapist that is good at challenging your belief system and can give you ideas on how to be assertive. Also good to have someone guide you through the journey. You may also have other underlying issues e.g ptsd, bdd, panic disorder that should be treated concurrently with sa
comfort zone crusher (till h gros)
Read up on philosophy to give you different perspectives (Noah elkrief videos, power of now)
Act (especially cognitive diffusion)
the natural lifestyles (daygame) (great videos on you tube)
New hobbies (especially recommend self defence e.g boxing)
Learning how to build a social circle,
These are the things I've tried so far amongst others and I'm still not 'over social anxiety' but that is not my goal any more. I suggest you try some of these ideas but also search the Internet, libraries and what you can think off the top of your head to find your own path to a meaningful life.
You may have a satisfying, meaningful life already but if you don't or you'd like a more meaningful life I just wanted to give my 2 cents to save you time that you ain't gonna get back