Hi P.
Congrats on the twins. My twins are now 18 years old, but I remember well those early days of trying to feed them and accept their differences. OK so first what does the MD say. Mine told me not to give the girls water. End of discussion. My understanding is also that babies have a quart of milk daily, whether it be formula or whole milk(not skim or 2%unless MD advised because babies need fat) A quart being 32 oz. and from what I see if they drink every bit which most of mine never did I only see 24oz.
Why does she refuse milk? Are there allergies or intolerances to dairy in your family?
My twins were born at 38 weeks and weighed in at 5'11" and 6'8" and one stayed pretty small all her life.
Do I wish I had done more question asking when they were small? Yes!! So I am glad you are asking questions, but ask the MD as well. He may see things that we can't because we are not seeing the babies.
God bless you and your little ones.
K. SAHM married 38 years so old enough to be your mom, talk to her she may have lots of stories to tell. Adult children 37, coach; 32, lawyer, married and had our only grandbaby; and the twin girls 18(yes they do grow Up)who are both in college after homeschooling. One majoring in art, and the other in journalism.