HELP!! TODDLER SLEEP PROBLEMS!

Hello im a first time mom,

My baby is already 1 yr and 3 months old and still doesnt sleep all night. Ever since she was born she doesn't sleep all night, she is always crying or complaining.

She drinks more milk at night then during the day, but if I don't give her milk she won't go back to sleep thats the only way she will go back to sleep . She wakes up every two hours. I would like if anybody has advice, suggestions, tips or anything that can help me to get her to sleep the whole night because I'm pregnant again and I won't be able to do 2 non sleeping babies. I would really want my toddler to sleep through the night