My 5 week old baby for the past 3 days has only been taking 1-2 oz on each feed and even this can be a struggle. She is sleepy all the time. Today is day 4 and has only has 2.5 oz today over 3 feeds (2am, 5.30am & 10am). I fed her at 10 even though she didn't wake up. Im sstarting to worry. Can anyone advise what i can do and if i should take her to the doctors? Thanks