My 16 week old was cooing and babbling from about 9 weeks old, particularly in the morning. About two weeks ago I left her happily babbling away while I left the room for a couple of minutes and when I returned, she was grunting and looking very pleased with her new noise.
Since then she mainly grunts and barely coos at all. She makes as much eye contact and smiles and laughs, but it's the same reactions but silent. Is this normal? We've both (DH and me) been trying all morning to get her to babble but nothing - she's been smiling but silent. Should I be worried?