I looked into legal separation and actually it would have been my preference. Of course get your own advice, but my L told me it would be highly unusual for a separation agreement to be amended at a later stage if all financials had been agreed with due legal advice at the time.
She told me that something substantial would need to have changed for this to happen. Like redundancy? I asked - no, like serious accident, life limiting illness or similar.
So, if you merely wish to S and not D at this point, suggest you work towards that with due advice of course.
Best of luck - and glad you are continuing with the IC. I found Meetups rather daunting too. But there are other activities out there where social interaction is more incidental to the activity - like dancing, walking groups, language courses - or whatever...
Xx
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus