hello,yes you are right,ear tubes fall out after 6-9 months.your daughter is having a condition called glue ear-in this disease thick mucoid fluid collects in the middle ear.this disease can recur after the tube falls out,multiple tube placements may be required.ask your doctor to place a T tube.this stays in the middle ear for a longer period.if your daughter is having enlarged adenoids
,they need to be treated.allergies and nasal/sinus
infections should be treated if they are present. middle ear infections push the tube out.your doctor is right.i hope your daughter gets better. dr praveen.