my son was a preterm baby his birth weight is 1.9 kg now .he has 4 month old and his weight is 5 kg ...he doesn't take my breast milk ..he take only formula milk ..nan preterm formula now i want to change his milk becoz formula milk is very costlier.,.so plz suggest me which milk i will introduce to my son? green packet milk or buffalo ....

A. Ma’am the child is gaining very well as of now your child has gained exceptionally well right now so if you want to switch to other formula I would advise you to Similac advance that would be good but if it is also out of your budget you can try giving lactogen and after completing the age of six months check with your doctor and start with tone pasteurise milk with because that can be given after six months and it is budget friendly also