Transition from 2 naps to 1

[sunnydays]

I have three 17-18 month olds who still nap twice a day. I put them down around 8:45 for about 40 minutes (up to an hour if they have had a bad night) and then they all sleep for 2-2.5 hours starting at 1pm. I actually find that if I skip the morning nap, the afternoon nap is worse because they are overtired! I would try putting her down as early as possible and only for about 45 minutes in the morning.