Welcome to YT and congratulations on your new pup.
I brought my Poppy home at 6 weeks old (I was told she was 8 weeks old) and at the time I didn't know that this was too young. She had trouble with her ears and in the end we found out she was crawling with ear mites so I didn't want to give her back to the breeder because she would catch them again, and I didn't trust them to look after her properly.
I had her in a pen in my bedroom and she would wake up every hour or so crying just for a cuddle. I know that I probably shouldn't have given in to her but I did hug her until she fell asleep again. I know she was just scared and lonley because she was too young to be away from her mum, this carried on for about a month until she slept through the night. (she had her pee pad in her pen).
I wouldnt give her milk as it make give her loose stool, just carry on mixing her food with a little water and giving her water to drink.
You should start training her on pads straight away seen as she hasn't had her shots and can't go outside yet. Look for the signs (sniffing the floor/circling) and put her straight on the pad. When she goes on the pad PRAISE PRAISE PRAISE! but if she does have an accident just say NO and put her straight on the pad. If you see a puddle on the floor but dont catch her in the act dont make a fuss just clean it up and try and keep an eye on her.
I also found Poppy slept better when she had a hot water bottle in her bed, you could try it?
I kept Poppy in a pen with a pee pad in until she was around 5 months old, then I started crating her at night and teaching her to go potty outside. But lots of people start earlier then that.
Also you will have to teach her bite inhibition because she was taken so young. She will be teething but don't think you are being kind by letting her gum at your finger because once those sharp puppy teeth come in you will regret it! Just say NO and give her a chew toy like a Kong or one of those puppy chews which you soak in water then put in the freezer, they will sooth her sore gums.
Good luck!
EDIT: Sorry I thought your pup was a girl, please excuse the "she's" I mean "He"
