Briona's a bit older but until recently her schedule has been:
7am wake, breakfast, change, play
8.30am back to bed
11.00am wakes up again, brief morning tea (biscuit), play
11.45am lunch, back to bed by just after 12
Finally wakes up for the day at about 2pm (play, afternoon tea, dinner, change...) and down for the night at 6.30/7pm, ie sleeps 12-13 hours at night
Sounds like Ella's doing roughly the same just with less food (as would be expected... Briona eats more than my 3yo!) so I wouldn't be worried at all.