Dropping the third nap (the evening nap) will impact the rest of your child's day. Dropping the third nap usually happens around 8 months of age, though the range is 6-11 months.
On Becoming Babywise says, "Once the third nap is dropped, both waketime and often the other remaining naptimes will increase in duration" (page 133). This would mean that baby will likely be awake for other times of day and will likely take a longer nap for the other naps.
For my children, however, they were up for two hours, slept for two hours, up for two hours, slept for two hours. They didn't really increase waketime or naptime length. I found that they instead moved bedtime up by about 30 minutes.
You could let your child sleep for 2.5 hours and also stay up longer if that didn't interfere with the nap. If your child can't stay up longer than two hours and won't sleep longer than two hours, try moving bedtime up by 30 minutes--at least for a little while. As your child gets older, you can move bedtime back.
Related Posts/Blog Labels:
- In Action: Dropping the Third Nap:http://babywisemom.blogspot.com/2008/02/in-action-dropping-3rd-nap.html
- Dropping the 3rd Nap (evening):http://babywisemom.blogspot.com/2008/01/dropping-3rd-nap-evening.html
- Dropping Naps:http://babywisemom.blogspot.com/2008/01/dropping-naps.html
- Dropping Naps: A Quick Reference :http://babywisemom.blogspot.com/2008/11/dropping-naps-quick-reference.html
- Dropping Naps Blog Label