That is a bit young for adenoid surgery and certainly she is not too young for antibiotics as they can be given to newborns who need them.
The adenoids and tonsils are really part of the immune system and are not routinely removed for infection problems but rather for significant airway obstruction, which is unusual at her age.
It is common that in infants and toddlers of age 18 to 24 months the adenoids are symptomatic, meaning that snoring, nasal airway obstruction and obstructed breathing usually occur during sleep.
Over time, adenoids become gradually asymptomatic as when children reach school age, adenoids are expected to begin to shrink and when they reach teenage years, the adenoids should become small enough to not cause any symptoms.
Recovery may take 2-4 weeks after adenoidectomy.
However as she has fluid in ear which needs to be treated well.
I suggest you to ask her ENT specialist to advocate yourself.
I hope this helps.
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