Pomeranian Sleeping Hours?

by Carla Cec
(Scotland)

It seems my Pomeranian is always sleeping. She goes to bed at about 10 then she wakes up at 8 and plays for about and hour and then goes to sleep again until about 2. Then she wakes up and has a 1 hour nap before bed again. Overall she is getting about 16 hours per day. Also we recently moved houses. She used to be really cheery and jumpy and happy and now she's sad and sleepy and she growls. She is two years old. I play with her but she quickly loses interest. Thanks in advance! Please help!