It doesn't look very healthy to me. It appears to be very limp. Was it like that when you received it ? I'm not familiar with the care of Pilea, but most succulents should be planted in a fast draining mixture like one made specifically for cactus and succulents, and not watered for about a week. I'm curious, did these pieces of plants have roots ? Also, did you believe you were ordering a potted plant like the one in the photo, or knew you would be receiving pieces or cuttings ?
Q