R.Z.
Liam might be ready to give up his morning nap. My son gave up his morning nap at around 11 months. He then took an afternoon nap from 1 to around 4-4:30 until he was around 4. After that, he took a little nap until around 5 years old when he started kindergarden.
Try putting him down earlier in the afternoon if he doesn't want to nap in the morning.