Hi that's normal in breastfeeding infants, hold baby vertically after every small feed and position properly to the breast so as to avoid air ingestion while feeding which is the most important cause of colic pain and gases and fuzziness

Yes its necessary..its called rhesus factor.

Hi is there any stiffness in the body too?

Hi if it's under medical supervision then don't worry about it

Oh my god how a 4.2 child can read, plz don't force the child, he will learn gradually.

Have you started any semi solid food ?
Make him burp after every feed or even between feed so there is no gas built up.
If you are breastfeeding then keep a check on your diet too.
If he is taking fm then see if it suits him or not.

Hi can you send image of it?

Hi is it audible clearly, then get a chest examination done immediately

Hi give nasal saline drops in both the nostrils and suck it back with nasal bulb to clear the airway and stuffed nose and use humidifier in baby room to provide humidification and breastfeeding frequently your baby for hydration

Gud or powervita.n multi grain aata roti.desi ghee.n lohasav patanjali syrup.empty stomach before meal