13 month old drinking too much milk!

[MommyBird]

I really need some help here guys, i'm really stuck.

A couple of things.

My DD is having Cows milk about 6/7oz in a morning, one in the afternoon and some through the night.

She has a cold and is teething :( she's off her food and just wants her milk. She will pick at food and have water but no big amounts.
She's now constipated too.

How do i go about dropping a bottle? Is there anything i can do?
Im stressing abit as she has 'Baby bottle tooth decay' slightly on 1 tooth due to Milk, because she is teething and her gums are sore its very difficult to give her teeth a good brush, she is also not eating due to her teeth and just wants milk.
I can't win.

She's booked in with the dentist next week.

Any help would be appriciated :)

Sorry the no big amounts is regarding the food. She's having plenty of water :)

Why would you want to reduce milk? I never refuse milk when my DD asks... it's not as if she is asking for fizzy drinks

Because she isn't eating her food.
She's drinking 2 bottles through the day which if fine...but shes drainning 3/4/5 bottles a night. Its more or less 1 pint bottle of milk per day.
She's also constipated because of the amount of dairy she's having :(

Is she feeling any better? It's quite normal for them to go of food if they are poorly and to want more milk

Off food even blames gin