Sorry if this sounds dim but what exactly should a 3 month old be doing, roughly? DD2 will sit her bouncy chair kicking or lie on her mat occasionally hitting the things hanging up or look in the mirror for a mx of about 10 mins. I try and give her things to hold, she just drops them. She isn't interested in the tv, not that bothered when I sing to her. Hates being put on her tummy?Is there something I am missing? Just seem to remember dd1 doing more at this age?