Judging by your registration date your DD was pretty recent.
I would focus on getting through each minute, each hour, each day for now. FB isn't a critical issue.
I changed my status from married to blank pretty soon after S because *I* couldn't stand seeing it. I blocked him and his whores for the same reason.
I didn't change anything else for a few months after S. Not because I wanted to be with him but because it felt petty and attention seeking. He changed his status from married to separated a few days after DD and told me during False R that he was hurt that "only" 2 people reached out to him (which proves he did it for attention). When I did change my name everyone already knew what was going on so it wasn't a big dramatic thing to do.
My advice - block him and his whores and never unblock them (you can't re-block for 48 hours). Changed your relationship status to blank then start blocking his family/friends in a few months time (unless they give you due cause to do so before then).
I am still FB friends with XSILs/XBIL and a few mutual friends who understand I don't want to discuss the sad clown in any way, shape or form.
In time I'll change the settings to make some of them acquaintances and can only see things that I specify acquaintances to see ie: photos/posts of the girls.
Some here have de-activated their accounts altogether. That wasn't an appealing option for me as I have lots of friends all over the Australia and the world and I like keeping in touch with them via FB - a lazy way to stay connected.
If you are tempted to air your dirty laundry on FB I would shut it altogether. I sooooo wanted to post a bunch of stuff but my pride stopped me. I am reaping the rewards of that as I have remained dignified throughout. The sad clown on the other hand has made a complete fool of himself with all sorts of pathetic posts (mutual friends warned me - I didn't let them tell me what it said and asked them to not tell me in future as it is of zero interest to me).
These first few months are the hardest - I promise you won't feel this way forever.