I agree with Judy too. Try a short morning nap around 7:30/8. You mentioned arrival was 6:45? Awake sometimes 5-5:30?
All of my kiddos (including my own son) are between 11-17 months. ALL still HAVE and NEED a morning nap. I time them within 2 hours of wake time. All of my arrivals are between 6:45-7:30. We do an hour 8-9 (give or take a half hour) then go outside, lunch at 11, afternoon nap again 12:30-2:30/3. I am very lucky! I have tried cutting out morning nap and having one nap 11:30-2:30 but that didn't go very well they all slept horribly. I would much rather get an hour nap in the morning so they sleep better in the afternoon.