Hi there:
When people travel, their bodies function as if they were still in their own time zone. Hence, you can feel pretty crummy until you've adjusted.
I would recommend keeping your watch set to your home time zone, and continuing to to follow your usual routine the first day. The second day, adjust the routine by 45 minutes or so (less if acute hunger sets in), writing down the new times. The third day, repeat the above. Also, if there are problems with too much light in the a.m. or p.m., make sure the level of light is appropriate for your baby's needs to get to sleep.
When you get home, reverse the process!
Hope that helps!