Hi doctor my son is two and half mths old. I feed him wit breast milk and nan pro frm the day he was born. Last week he had vomit fever and loose motion, dr suggested some medicines and has askd to stop nan pro for four days and follow zerolac, the prob is he does not drink tat due to the change in taste i add a little bit of sugar to tat but wen he drinks tat he passes a loose tool wit some white particles. Suggest me wat i have to do further shd i continue nan pro or zerolac.