Does anyone’s LO just eat and eat and eat.

My girl had steamed greens and moussaka (lamb, potato, aubergine in) for dinner. I use some kefir plain yoghurt at times to make greens more creamy on taste (dip them in it). (Chopped kale, tenderstorm broccoli finger food, smashed peas etc) She just would eat and eat at times. Today some came up (she’s not bothered by and just laughs 😵‍💫) and I realised enough was enough. Even though she would have had more having been her choice. She’s always been into food and has an appetite for it Is there some sort of measure guide on how many grams they should have. So I know to keep within that re mit? Thanks