Shih Tzus

My baby zoe(shih tzu) just gave birth 5 days ago. This was her first litter and mine as well and i have a few questions so if anyone has the time to read and reply please do. First how often should she be feeding and for how long? The first two days she basically didnt leave them now shes out alot! And i am keeping them warma nd in a safe place where mommy approves but zoe (the mom) is so hot and is constantly panting. ( she has fresh water always) is this why shes out more now and if so what should i do? Or is this normal? And i was told that the pups would be prety quiet the first cpl wks and if they cry/whined alot then something is probably wrong with them. Is this true? Cause they do cry/whine but i wouldnt say alot in my opinion but i dont know. They are mich bigger today than 5 days ago when they were born. They look healthy. But i dont want anything to happen to my baby or her babies! And lastly my male shih tzu (the daddy) is acting afraid of them which he is a scaredy cat lol and hes a little stand offish but he will come around right? Hes a good boy. Very loving to zoe right now. Thanks for your time. I will stop with those questions and see if anyone is willing to take them on. Lol -mae