There are many people on shifts doing well with alli. I always recommend taking some time to sit down with pencil and paper and develop some menus that work for your schedule. This seems more important for those on shifts.
Your cycle of meals may be a little different - dinner for lunch and breakfast for dinner, for instance - but essentially there should still be three meals and one or two snacks. Some people generally go to sleep soon after their shift ends; while others do chores for several hours -- that makes the difference on whether the last meal is the lightest or heaviest.
Often the biggest challenge is to avoid high-sugar, high-fat snacks that seem to be more prevelant on shifts. Sometimes co-workers are happy to make the change, other times they have some resistance. So all in all, this is why it's helpful to put things in writing and have a visual plan to help you stay on track with alli.
Please let me know if you need anything else.
Pat Baird, MA, RD, registered dietitian