Is this a countdown of sorts (if mirror, counting up?)

Signaling a new "act" of the plan (movie title Q drop)

Confirming preparedness to white hats (Paul Revere)

4/13 - "5" #3952

4/14 - "4"

4/15 - "3"

4/16 - "2"

4/17 - "1"

4/18 - "_" #3987