*Put your child to be at her regular bedtime the night before the clocks change.
*Your child is likely to wake up a little earlier than he normally does (possibly 1 hour earlier according to the new clock). Try your best to start your day after 6am.
*Plan your activities and meals according to the new time.
*If your child is still napping, try to make sure she takes a good nap(s) so that she can make it to her regular bedtime according to the new clock.
*If your child is no longer napping, do your best to put him to bed at his regular bedtime according to the new clock. If you think he cannot make it to his normal bedtime according to the new clock, then move his bedtime by 30 minutes for a few days until he adjusts.
With some patience and consistency your child should adjust to the new time in just a few days.