What is the earliest date to leave Saudi Arabia on Hajj visa

This year I will be entering Jeddah in a group to do a Hajj.

After completing Farz and mandatory duties I was planning to leave country from Jeddah airport as individual traveler, while my group will stay 10 more days in Medina.

My question is, will it be possible to leave Jeddah on June 18 (after completing 3 stonings), or I have to stay longer, since my group leader told me that Saudi Arabia usually bans exit country for a few days after Hajj and the earliest possible day to leave is June 20. However, he is still not sure since these rules will be announced in the upcoming weeks.

How is your experience?