Welcome. You have come to a good place. Peace is right, keep posting and the others will come.
The basics always bear repeating.
This is a marathon not a sprint. There are no quick fixes to this process. Avoid talking about the R but validate when you can. Do your best not to react to anything (at least in front of him)
If you share more details, we will be better able to help and support you.
"Acceptance doesn't mean resignation. It means understanding that something is what it is and there's got to be a way through it."--Michael J. Fox