Too little diet or insufficient nutrition intake.
It may be caused by too little diet or insufficient nutrition intake during confinement.
♀? Over-tired
It may also be caused by overwork, such as waking up in the middle of the night to feed.
disease
It is not excluded that some diseases exist, such as hyperthyroidism and diabetes.
Mental tension, depression and other emotions.
It may also be related to mental stress, depression and other emotions.