my baby had speech delay she started speaking when she was 2.5 yr old now she speaks in two words understanding everything improving but her sleep pattern nt improving she used to sleep in one routine til one year of age after tht her sleep time started changing in d middle of night she awakes n stays awake fr three hours she jus follow one routine fr a week after tht same happens stays awake fr hours like tht d routine changes .. cn I give her melatonin as need to admit her in school as well my sleep very disturbed she keeps on singing rhymes as well speaking some words