Hi Jude, had my 3 week WI today....Yippee! 18 lbs gone.
Don't worry about not going every day. In the days befor LT, I was going daily in the morning. Now its just every 3-4 days. Dont forget, you are taking in only the basic minimum for survival so there really isn't any "waste" to get rid of. I've not taken any laxatives as it isn't hard to go when your body tells you it needs to!!!!!
Good luck, don't forget to come on here any time, especially if you are going through a tough patch!