Unable to take long naps

Hi fellow mummies! My baby is 2 months and 17 days old. Recently, her nap time is getting shorter and shorter. She tends to sleep only for 15-30 minutes. When she wakes up, within a few minutes, she starts to cry. She was well fed, diapers changed and stomach is not bloated (so it is not possible that it is due to colic). This sleep cycle repeats. Eat, short nap, wakes up and cry, eat... (cycle repeats). Is this normal? What could be the reason for her grumpiness and short naps? What should I do?