Need Advice Please

Hey all! I just need some general advice and I didn't know where to post! I have a five month old daughter. My husband and I just got temporary custody of my 6 month old niece bc her mom can't take care of her right now. Her court is next week but CPS believes we will have to long term foster her. I need advice in how to work with two babies almost the same age! Formula, diapers, food, attention, naps... I don't know how to handle it! Any advice helps!

Heres a picture of them together