This Post contains an updated reference for ATP 6-22.1 The Counseling Process. Please see below
There are specific counselings that have time lines associated with them like initial, monthly, quarterly counseling sessions. But with regard to derogatory counseling sessions there are no time limits associated with when a counseling should be completed.
A good rule of thumb to follow: counseling should be conducted within a reasonable period of time from when the incident occurred. This will vary depending on the situation. If you believe the elapsed time is unreasonable, your chain of command can help you determine if your definition of “unreasonable” is accurate. You can also contact the IG anonymously by phone and ask for a disinterested opinion.
FM 6.22, Paragraph B-5, page B-1 states:
Successful counseling for specific performance occurs as close to the event as possible.
UPDATED REFERENCE FOLLOWS:
ATP 6-22.1 The Counseling Process, Paragraph 1-6 states:
Specific Instances of Superior or Substandard Performance
1-6. Often counseling is tied to specific instances of superior or substandard duty performance. The leader uses the counseling session to convey to the subordinate whether or not the performance met the standard and what the subordinate did right or wrong. Successful counseling for specific performance occurs as close to the event as possible. Leaders should counse l subordinates for exceptional as well as substandard duty performance.