They actually could've done it in 4 shake down missions. Apollo 10 was under fuelled for fear the team might attempt to land on the moon before Apollo 11 to ach

They actually could've done it in 4 shake down missions. Apollo 10 was under fuelled for fear the team might attempt to land on the moon before Apollo 11 to achieve the record. They did everything except for the actual moon landing portion of the mission.