Can anyone help me find this book please?

[Belisama]

I am trying to get dd to read for pleasure, without much luck. I remember a book from my childhood which really kickstarted my own reading. It was about two (or maybe three) children, siblings I think, who find a baby in their shed. They care for the baby until the parents come back. I can't remember anything else and it may not be suitable now anyway but would love to find it again. Anyone with any ideas?

Is it The Giant Baby by Allan Ahlberg?

No, but that looks great for ds! It was for older children I think, sorry for the vagueness, I'm not going to find it without more info am I?

Hmm. Has she read Necklace of Raindrops?

Could it be Three Girls and a Baby?

I was looking for that for years, and someone on here suggested that for me.

No neither of those but thanks for the suggestions. The children think a doll has turned into the baby and I think the parents eventually come back.