The symptoms which your daughter is facing is because of kapha dosha.
According to ayurveda, the lifespan of a person is divided into three parts. The first part is dominated by kapha dosha. The second part is dominated by Pitta and third part by Vata dosha respectively.
So in childhood, complaints and symptoms related to kapha dosha is common.
Immunity also plays an important role. Children’s with low immunity catch cold fast if they are in the company of people with common, cold and cough.
Next Steps
Personal hygiene, use of safety mask, sanitisers, and immunity. Boosters will help your child to fight against such infections.
Here, I would suggest a syrup by name septilin ( Himalaya manufacturer)
A dose of 5ML twice a day, will help to avoid frequent infections.
Health Tips
Any medicine either allopathic or Ayurvedic should be taken under medical supervision so as to avoid overdose and complications, you can consult online or off-line to fix a proper dose and a proper medicine preparation.