my son is not sleeping well not even atleast 1 hr deep sleep from 2 months onwards.. and now he is not drinking milk properly whats the reason I am not getting can someone suggest

A. Teething may have started to happen and second reason that’s very common to be seen with kids that they get their vision after completing the age of three months and it’s a clear vision that they haven’t because of that this kind of situation can arise which is why I’m going to advise you to please take an assistance with your doctor if needed they will guide you and assist according to the situation