It's possible that the day Trump dropped his tweets about wiretapping was the day that he actually viewed the FISAs himself for the first (and probably only) time, so he knew exactly when, where and why it happened.
To clarify on this: Rogers still warned him in November 2016 that he was being spied on, hence his switch of base from Trump Tower to Bedminster. However, Rogers DID NOT have the proof at the time. Trump got it in March 2017.
Note timeline:
Mar 4, wiretapping tweets.
Mar 8, Page offers assistance.
Mar 9, Sen Int Committee confirms Coats. Ali writes Page Article #1.
Mar 10, Ali writes Page Article #2.
Mar 15, Ali writes Flynn Article. Senate confirms Coats.
Mar 16, Coats starts.
Mar 17, Wolfe / Ali.
Mar 4, wiretapping tweets.
Mar 8, Page offers assistance.
Mar 9, Sen Int Committee confirms Coats. Ali writes Page Article #1.
Mar 10, Ali writes Page Article #2.
Mar 15, Ali writes Flynn Article. Senate confirms Coats.
Mar 16, Coats starts.
Mar 17, Wolfe / Ali.
The Ali Watkins articles. 
It is also possible that the wiretapping tweets was also the day that the leak counterintelligence operation was started in the first place.
