Hello,
Welcome to Healthcaremagic.
Yes, you are absolutely right. Formula fed infants are more prone for infection.
Because breast milk contains the
immunoglobulins, white blood cells and it is essential for the immunity.
Immunity is vital to fight against infections.
Thats why your baby have
frequent cold and
diarrhoea.
Breast also easily digestible comparable to formula feeding.
Thus she have diarrhoea with sticky mucus.
As your baby finished 6 months, you can start weaning and introducing solid foods to your child.
You can start with mashed cooked vegetables and fruits.
but still you have to continue breast feeding intermittently.
This help in preventing infections and gastrointestinal problems like diarrhoea and abdominal cramps.
Hope this helps.
Take care.
Regards,
Dr.Manjeth