As ADHD has a genetic component, there is a possibility of your daughter being ADHD, but not a certainty.
Seven months is quite young to start looking for difficulties, however, the best option at this stage is to keep a record of all behaviours, sleeping patterns, likes/dislikes etc. This way, should you suspect anything later, you will have a documented history and won't have to scratch your head too much when specialists ask you to think back 5 years.
In the mean time, enjoy your little one and try to instill good, manageable routines.
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