18 monthsBaby not eating any food at all

Hello, my baby was having good portion of smashed food till 10 months of age,then he fell unwell for 7 days with fever and cold, post it he has become very picky eater, sometimes he would have breakfast like upma, dosa, idly, omelette etc then full day he would not touch any food, he is still on breastfeeding. I tried caw milk everyday for 3 months daily. He never had it, still i tried but no luck. I gave him variety of foods like many rice types, dosas, idlis, puri, and prepare new food every couple of hours, but he won't have it more than a bite, also no fruits at all, I have been trying on all seasonal fruits, no luck. Now he is 18 months old and weight is hardly 8.5 kgs, please help me, how to make him eat, he is having late teething, hardly 4 teeths till now. Still coming in. So can't give him much hard to chew food. Please help.