Yes. Absolutely. Often, we can rely on what is known as the guilt factor. That is the WAS feels guilt and is willing to be exceedingly generous. In your sitch it is different. You need to find out your rights, a time frame and I think to get things in writing. ,he originally thought it would be a trial separation, and apparently it won't be.
Congratulations actually, for arriving to this spot. Personally I have watched you work your way here for three months. What a wonderful place to come and get the support you need while making the tough decisions.
You do need to gain some detachment and clarity on this sitch, so in this instance S looks like it may help with that (((())))