My baby is not gaining weight from past 3 months. He had ear infection and doctor prescribed antibiotics. After that he stopped eating. He is also not crawling (he does army crawling) also not standing independently. He is active baby

A. Ear and throat these two areas mostly affected by bacterias, and multiply the counts and causing the issues. In the dark places only these will grow, in ears kind of yellow color discharge will be there due to these kind of bacterias baby wont take food as usual. Antibiotics can give a control, follow the advise from your doctor.