Anatomy scan questions

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I was really distracted when I got the call for my apt so the only info my brain actually took in was the date and time... I remember them saying something about drinking water but I don’t remember how much in advance they said..... can anyone help please !! 🥴 also... I heard some people drink orange juice or sugary stuff 30 mins before their scan and it making it easier to get gender and other measurements.... is this true or should I just ignore that and stick with only water? My scan is tomorrow! Last time at 12 weeks my baby was face down and didn’t move very much. Hoping this time I’ll at least get a profile shot