Sometimes my 7.5 week old baby is just alert and not sleepy in the least. During A time, we play (I talk/coo at her), use toys, listen to music, or she watches a mobile or sits in swing or bouncer. Sometimes though I simply have to do things and she is crying. I was wondering, is it OK to carry her around during the active time in a sling/carrier so I have my hands free? I love having her close of course and she loves it too (stops crying), but I don't recall reading much about this in the books. Is it a bad idea to do this?