My baby is 20mths and still cries for milk. Not every night. More like alternate nights. Some nights she'll just sleep the whole night without milk if she's so tired from playing the whole day or if we've been out the whole day.
18 months is quite big to be still asking for milk in the middle if the night. Best to consult a pediatrician
She's drinking very little milk for last feed. Only 100ml. We tried giving her more but she just wouldn't finish. Therefore I guess that's the reason why she's waking up for milk.
Momof2