How did you go last night? Was did you both sleep through the night?

When I first got my puppy the first week or so was the worse, its an adjustment period, once you get past that time it is so much easier. My "puppy" is now a year old, and still sleeps in a crate and is crated if I am going to be gone from home. I am lucky, I get to take her to work with me. Most dogs sleep if there is nothing else going on. If someone is playing with them they are ready to play but if you were to set up a camera at your place you would find your puppy sleeping.

About the crate, dogs view their crates as their den or personal space, and so being in there is fine with them. When you get your new crate make sure it is not to big or you will end up with accidents. It should be big enough for her to stand up and turn around. I agree with Lv4dogs if it works don't change it.

About your food, like Lv4dogs a food with a lot of filler will probably produce more waste. A higher quality food will have more useable ingredients for the puppy and therefore less waste and in most cases you can feed less as well. Check the ingredients of your current food and go from there.