It took you a long time to get used to it, but yes, your baby is growing up and is now a little boy or a little girl. From the age of 5 to around 13, your child will grow enormously, develop his or her personality, and learn about life. This stage also corresponds to the perfect transition between nursery school (baby) and the arrival at middle school (pre-teen). That's to tell you, during these few years, your child will see and learn a lot of things.
From the age of 5, your child will therefore begin to search for himself, and to assert his personality, to choose what he likes or not (well we agree, within reason of course 😉). It is at this crucial age that many things play a role for his proper development.
And then, we hear phrases that never used to be said: "Mom, can I invite my friends over?", whereas before that, it was more you who led the dance of invitations... And yes, your child also needs to assert himself with these friends.