Yes, it’s quite common for babies to sometimes ignore a parent. Your newborn baby learns to recognize your face, and when you smile, for example, for a period of 6 to 8 weeks, you can see a smile on his/her face as well. This is one of his growth milestones.
You should have social interaction with your baby for up to 2-3 months, but it will not last all day. Sometimes your baby will get tired of socializing and will just look for calmness.
When your child protests against all your efforts to put them to sleep or eat, asking the babysitter to do these things or asking her father to do them can cause her trust in you to be shaken.
But sometimes your baby just gets bored with spending more time with you and wants to interact with other people. Or they may be bored, tired of socializing, and in search of silence. Don’t take it personally and help her connect with other people.
If your baby no longer smiles at you and avoids eye contact, show her objects and toys that she likes. Imitate with your face and make funny noises.
When you smile, the normal months for your baby to smile at you are the 2nd and 3rd months, and the months required for your baby to react to familiar objects are after the 7th month.
Apart from this, your child may behave differently from you when he/she is outside and in environments where he/she is not completely comfortable, and may not exhibit his/her behaviors at home. This is due to the fact that he/she is completely alienated from the environment and uneasy. The more you take him/her out, the more he/she will get used to this situation and increase his/her interaction with you because he/she feels safe with you.