Sources say that Katie Holmes is having to switch her baby plans around so a second child wouldn’t interfere with her career.

Katie had hoped to begin filming The Other Side this month, and afterwards, get pregnant. Her plans were to have the baby and have another film out by the end of 2009. Actresses have to work their family planning out, so their pregnancies don’t affect scenes from their movies, and Katie is no different.

“Both she and Tom Cruise — especially Tom — were hoping to have their next baby before Katie turns 30 in December.”

WENN