notsorted, I see where you are. You are in the Fog still.. It's OK, an abusive relationship totally disorientates you, you have no idea which way is up.
Try to find a quiet place with yourself and identify the base truths in your life. That you are not happy, that STBX is making you unhappy, and not doing enough/anything to help you NOT be unhappy, that you do deserve better, that it will never get any better, only worse if you stay where you are.
Once you accept that there really is no point in entering into negotiations, really understand that. the person you thought you were married to is not there, is long gone, never existed in the first place, and no matter how hard you wish, he will never ever be seen again. Once you get that, hang onto it, for dear life, because those thoughts are the white pebbles that will lead you out of this deep dark forest.
focus on the truth, don't accept anything he says as the truth until you have checked it out, disengage, be non-committal to everything and know yourself, love yourself and stand up for yourself.
Use the word NO more often, use it all the time if it helps. Come to your own decisions about everything.
TBH, you have to let go, you have to tell yourself that there WILL be no changes, there will be no signs to look for. Even if he turns over a new leaf tomorrow, it's sustaining that change for a VERY LONG time that will prove there is change.
While you stay in this relationship, there is no incentive for him to change in reality. think about it.
The only way he will change (minute possibility) is that you leave him, he realises what he has done and works damned hard to make it up to you, by himself and over a very long time works to change the fundamental beliefs of entitlement to treat you like crap, permanently.
If you leave and he changes, great. You can consider a new relationship with the new him. If you leave but he doesn't change, GREAT, you know where you are and you are free of the abusive controlling man. As hard as it looks, leaving him is actually a WIN/WIN situation.