My son started this around 4 months he’s now 5 months but it goes away, she’s discovering her voice and all the things she can do with it. Just be patient, try to keep her occupied with some play time. Talk to her, pick her up. My son would only do it when he was laying on his back. It’s just one of those things you have to be patient through. I was just like you a month ago, worried. Now he hardly screams.
@Terrika Thank you for sharing this. I am feeling relieved. As you said seems like she is discovering her voice.
Yes my lb has started doing the same