She's a big bub - many mums find bigger babies can be hungrier in those first few weeks so hang in there!

Head bobbing and mouthing/sucking are classic feed cues - feeding her or just offering the breast when she shows them will do great things for your supply.

If you're finding she doesn't settle well during the day, definitely try a sling as the others have suggested.

As for her wet nappies, is she in cloth or disposable? 6 disposables is great, in 24 hours.

It sounds like you are doing most everything right hun. Keep it up!