Need advice asap !!!

hoping someone can help me ... I'm a first time mum to a five and half month old girl and for two weeks she was unwell with a bad cold and ear infection !! She was being sick during the night so I brought her in beside me it was the only way I felt that she was safe .. This has put her out of her routine as well as being sick 

before this she used to get bathed go to bed at around right dream feed at 12 and that was her U til around four or five but now she is staying up until 12 and 1 at night and still up at least three times!! I cant seem to get her back to routine and sleeping in her cot !!! 

Please help 😃