R is 17.5 months and we keep trying to get him on one nap...but it's clear he still needs 2 naps a lot of days! He really doesn't fight taking 2 at all, it's just the second one got really late and it got hard to plan our schedules so we pushed ahead with one....and then had to go back. I'm wondering when he will really be able to do just one nap? T was solidly on one nap by 15 months so this is very strange to me!

Anyone have a toddler transition to 1 nap on the later side?