I agree that you should use the time he's away to really think about the future of your marriage.
Do you want to spend the coming years with a man, unable to stand up to his mother.
It's not going to change, because he was raised in that environment and has been conditioned to do what she says. I don't see a time when things will change, unless he recognises that himself and has individual counselling to dig deeper and explore with a counsellor, how his childhood is affecting him now.
I don't see his response as it being over. It's good he didn't lie and reassure you, if that's not how he feels.
Don't love bomb him. Start investing time in yourself and don't look to him for reassurance and because he isn't in a place to give it to you.
I'm not sure what it was that his family can't forgive you for, but I'll admit that I would find it hard to be married to my DH if my family didn't like him or hated him.
I'm from a ethnic background where the family of origin means a lot and their opinions really do matter.
That's not to say that family would interfere with your day to day life though.
One thing your counsellor said grabbed my attention. She said it's not about his family and but the two of you to which is indeed correct.
However, she's not taking into account the diversity issues that are relevant in your situation. I just picked up on a pp mentioning cultural differences between you. Apologies if I've got it wrong.
A counsellor should not just dismiss those issues, as it's not in line with the BACP ethical guidelines for counsellors. It may be that she doesn't recognise that the cultural differences are a factor.
Please don't think I'm saying she's not a good counsellor. It's just the awareness around diversity