DD is 9 weeks old. Straight after a feed I put her down in her cot and she drifts off to sleep with her dummy. If I don't put her down straight away she gets overtired, cries and is VERY hard to settle. My concern is she gets very little "playtime". When she wakes we do a nappy change and I talk and sing to her and I get loads of smiles but it's not long before she gets grumpy wanting a feed. So my question is, is this enough playtime???