My son is 29 ,months old..should i switch doctors? and more qs.?

Ok here is the deal, I have a 29 month old son and a 9 month old daughter. Their doctor is the same doctor that I had as a infant. I think he is stuck back in that time. No matter what my children's symptoms are he always tells me to put 4 drops of saline nose drops int heir noses and mix 1 teas. lemon juice, 1 teas. honey and half a cup of warm tea. Then it takes them weeks to get better. My son also has very bad wax build up and we use debrox like the doctor tells us to but it don't get any better. He is also always lecturing us on smoking, neither me or my fiance smoke in the home when the children are awake and when they are in bed on the second floor we smoke downstairs with the window cracked. (please no lectures people) I have asked the doctor about how my son only says ~ mama, dada, papa, no, yes, go, alone, come on(more like mon) and very few other choice words once in a while and he tells me its fine he is only 2 in a half wait til hes 4 to tell if theres something wrong. and what do i do to help him he wont sit and play with flash cards no matter what games i play he will only do it for 5-10 minutes then hes done. HELP PLEASE