If you are missing 2 days in a row, just do the scheduled routine, more than 3 days repeat the week, if you feel pain in your back modify the movement.
By the way we started a new P90X BootCamp last week , but you can stop by now and get your questions answered and for motivation and inspiration.
The location of the threat is:
http://www.teambeachbody.com/connect/message-boards/-/message_boards/message/246172757Stop by check us out and Bring it!
Talk to you more on the thread
Coach Albert