寢食〔寝-〕 cam² sik⁶ {qǐn shí}

sleep and eat

寢食不安〔寝---〕 cam² sik⁶ bat¹ on¹ {qǐn shí bù ān}

not sleeping well and not eating well

寢食難安〔寝-难-〕 cam² sik⁶ naan⁴ on¹ {qǐn shí nán ān}

1. lit. cannot rest or eat in peace (idiom)
2. fig. extremely worried and troubled