wat r the mental milestones for 3 month baby??

A. Ma’am See the milestone for a child almost at the age of three months is that they gain their vision and then they start responding to sounds give social smile look here and there you know that so easily distracted because they can see so many new things around him colours and everything because they start understanding these things after three months oh that’s the mental and physical milestone for a child and the head also become stable by 3 to 3 1/2 months and they learn to roll also