When did your baby?

Not BFR but i need mind easement;

When did your baby laugh/giggle?! Shell be 5 months and still nothing. She makes eye contact unless distracted but doesn’t always turn her head when called and she’ll follow us where we go. She doesn’t make many noises but she’ll “ahh” when i change her but she plays, nothing. Sometimes it seems like as if she’s trying to talk and she lost her voice. It’s like hoarse

-of course I’m worried and I’m sure it’s nothing but still😭

Also, When did they sit up on their own without any help?

How long are their naps? And what do you do for a nap routine?