Leave him in the cot for little longer but if he continue to cry I suggest you get Yao lan for him. Your situation I encountered before and insist against Yao lan but after 2 weeks I tried ways and I feel tired unable to sleep well so my family and friends suggested to intro Yao lan as they will more feel secure and able to sleep making me easier to do my stuff. And place his bean pillow together to make him feel safe and will not get "scare" easily.
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