Hello. Welcome to HCM.
is a common problem in children, though for your child it has started much early. Now adenoids is something which will regress by 6 years of age... but still a long time to go.
You can act best by trying out some homeopathic
medicines to boost immunity and by constantly trying some effective home remedy e.g ginger with honey and lemon etc. For these cases, prevention is the best therapy.