It is best to schedule it on a day and time that is convenient for you and your child. The shot should not be scheduled during nap time for young children or at the end of the child's school day when they are tired. It might be better for school-age children to participate in a weekend visit for a flu shot rather than after a busy school day when they might feel tired, crabby, and less able to manage stress.   Be sure to bring a comfort item, perhaps some toys, and something to distract them. The procedure is very quick, so many items are not required, just the ones the child will need.    The best way to prepare young children for what is expected each day is to give them a sequence of events (before they understand the concept of time) so that they understand and feel prepared.   There are times when flu shot appointments don't go as well as expected. You can ask the child how it went when he or she is ready to share. Try to avoid assuming the child thought or felt it went terribly and hold back from sharing what you thought.