Just want to be reassured that this is normal! My nearly 5 month old DD gets upset after a few seconds of playing with any toy- previously she liked them. I think it's because she wants everything in her mouth and when they don't completely fit she's frustrated but it's getting much harder to keep her entertained in the house. She's also started complaining about being the buggy unless she's sleepy. Am running outs of songs.....(and energy)