Surprise babies please help

I was given a female chinchilla almost 2 months ago. I woke up yesterday to 3 kits in her cage. She did very well giving birth. The kits were 45g, 43g, and 42g at a day old. I didn't know that she was pregnant so I didn't prepare or give her anything extra for nutrition. The kits keep fighting over her nipples and I don't know what to do or if I can help by supplementing something to make sure they are all eating right. Also what can i give momma to help her with more energy or anything...

Surprise babies please help