My son wouldn't eat meat until he was nearly 2. remember food is for fun until bub is 1. I always offer something and if they're not keen i do a deal, as long as they at least try it, they can have what they want if they don't like it. eventually they will find something they like. also we have had regular phases of 'i think i will just eat rice crackers all week' and with plenty of other foods too, like bread weeks, carrot weeks, all sorts. their little bodies will tell them if they need something, to get to that age and only eat yoghurt is very unusual.