...keep up on what's going on with being able to gain entrance.
I follow the Trip Advisor Paris forum as well as the RS forum and I know a lot of the regulars here do as well.
Last week someone posted that they were unable to gain entry to the Louvre using a Paris Museum Pass for the late opening hours on Friday night. Now someone has posted they were in line Sunday AM at opening and were turned away with their Museum Passes.
"I can confirm that they were turning away Museum Pass holders this past weekend. We were there when it opened on Sunday morning, passes in hand, and were told that it was too crowded and pass holders were not allowed in."
A Paris Destination Expert has posted this today "Le Louvre is of course closed today, Tuesday, but I have noticed that there are currently no tickets available before Sunday. This week, one must have a timed ticket for entry. Paris Museum Passes are not being honored. This is the first time limited entry has become an issue to my recollection."
I've got family and friends traveling to Paris on Thursday and have had to re-advise them on their Louvre strategy. I've recommended they go ahead and purchase a timed entry if this is a sight they want to visit. When we first started discussing their trip (last Thanksgiving, lol!!) I blithely gave them the info about the Paris Museum Pass never thinking things would change the way they have - both with the Louvre crowds AND the changes to the PMP.
So...the sands are shifting. What worked for me last April or for you in 2017 is not going to be of use currently. Keep an eye on this forum and at Trip Advisor if you are traveling soon.
As for myself? I'd already bought a timed entry for the Leonardo exhibit the end of October, now thinking I might have to purchase another timed entry ticket for earlier in my visit and use it on a "non-Museum Pass" day.