I would gauge the real start of the original French Revolution as when the soldiers turned their guns on their officers and joined in the insurrection. This, symbolically, is the same thing. It would be increasingly dangerous for Macron or any other official to order the police to do anything at all against the protesters.
During an earlier revolt in about 1905 a Russian soldier told the Tsar, “Either you order us to fire (on the mob) or you abdicate.” It looks as though Macron may face that decision. And, when it comes, it’s up in the air who the soldiers fire at.
It looks like we might be seeing troops in action sooner rather than later.
“French cops call for troops on the streets”:
https://www.thesun.co.uk/news/7884401/french-police-cant-cope-paris-riots/