Some days my 14 month old ds seems to lack energy. He's been like this today. Keeps rubbing his eyes and coming over to sit on me or wants picked up. He still plays and enjoys things, but just with less energy. His temperature is fine and he's eating and drinking normally. He's napping now and been asleep for 2 and a half hours which is very long for him. Normally his naps are 1 - 2 hours. He had a good sleep too, 12 hours with a couple of wake ups, which is normal for him.
I suspected maybe an iron deficiency, but he's only like this every now and then not all the time. Has anyone else had young toddlers like this? Not sure if it's normal or not, he's my only child, so don't have any other experience of children this age to compare to.