4 mos and 16 days still not yet doing eye contact,nor smiling too😭

Aw, I get the worry, mama, a few of us had similar concerns at that age too! The good news is she's responding to sounds and your voice, which is actually a really positive sign of connection. That said, I'd really suggest bringing this up with your pedia at the next check-up or sooner if you're feeling anxious, just to make sure everything's on track, sometimes babies develop these things at their own pace, pero peace of mind is important din.