my son is one year old he is not eating any food for past three days drinking only milk that also rare ? can you suggest me what to do

A. U See maybe your child is having its teeth which is my loss of appetite has happened with the child along with that also I would like to tell you that a lot of times one is just get bored of the regular food to work upon a variety and if nothing is there in the last possible reason that I can think of is your child is having deficiency of iron in the body