my son is 15 months now. I feel like his appetite has bn decreased from past few days. Now he dsnt even eat his favourite food items. it's not like he s not eating but I feel he s eating less in comparison to past . I am giving him liv 52 syrup once in d night. is it ok ?? what are the reason behind lack of his appetite?? it can be due to teething ?? he s appearing few small acne over his face also