Hi pete
I think the thing to do when you know you're on shaking ground is to throw out few lifelines...reach out, talk about it...get some opinions on what you need to do.
Like others have said hitting a plateau at 90 days isn't at all unusual...whether it's PAWs or not, this link has some good ideas about maybe getting past that plateau...
Post-Acute Withdrawal Syndrome (PAWS) — Why we don’t get better immediately) « Digital Dharma