Anyone got any tips for getting a 7 month old baby to sleep through?

My 7 month old wakes every 1-2 hours through the night. She feeds for a minute or two (feeds) then goes straight back down, but if I dont feed her she screams until I do and then is so awake it takes ages to get her back down. She is fully on solids, three meals a day. She used to take a pacifier/dummy sometimes, then sometimes feed, but now she refuses the dummy. She wont be rocked back to sleep. I do not feed her to sleep at bedtime, she goes down, in her cot, with her soother. Any ideas?? Thanks!