That would be the same  RFK, Jr. who is an anti-vaccine nut despite what the CDC and other scientific sources say about his bogus claims?

And that  the CDC, according to him, is a 'cesspool of corruption'?

Your lack of sources doesn't help your argument.  

The reduction of 'advisors' in that memo from "16,752 in October to December's 15,894" is hardly the major policy change you would like to believe in.

"The great preponderance of the evidence...would appear to refute any notion that John Kennedy had decided to withdraw from Vietnam." However, Logevall goes on to speculate that Kennedy, because of his character and personality, might have considered, at a later date, a unilateral withdrawal of American forces from Vietnam."



https://en.wikipedia.org/wiki/National_Security_Action_Memorandum_263