please help any ideas on how to get her to sleep

my baby will be 6 mths on the 30th. She was sleeping around 3 hrs at a time at night then waking up to feed going right back to sleep but around Christmas she got sick with bronchialitis and every since she wakes up every hour all night long and acts likes she hungry but won't drink more than 2 oz at a time she even acts like she wants to play. anyone else have this problem or any ideas to try and help her sleep. again all of this started when she got sick