If in doubt, whip the boob out. I don't think it is possible to overfeed a breastfed baby. Also;
-let down is a bitch for the first couple of weeks, especially as your womb contracts. It gets better, but always check the lat h if you are not sure.
- learn to breastfeed lying down. It's a lifesaver at night, especially when you are at the six week mark and sleep belonged to another lifetime.
-Don't be alarmed by the constant feeding. It's cluster feeding and your child's way of ordering in more milk as they go through their growth spurt. Your boobs will adapt.
-eat, drink, sleep, feed baby, wind baby, change nappy. Repeat. That's all that matters - housework can wait. If you can get out of the house (for your sanity), brilliant. But it's not necessary.
-look into slings. They are brilliant for keeping you mobile and your baby happy
- consider a safe form of cosleeping. I had the crib attached to the bed, so night feeds were a breeze.
- looking forward, I would really recommend breastfeeding beyond six months, if you are happy to do so. It's been brilliant with teething and the majority of my weight loss happened after my DS was "officially" eating solids. I also went back to work at eight months and the evening feeds really helped to settle DS.
Finally, whatever you do, congratulations on your new squish!