Ohh that was so long ago, I am so happy for you, mashallah! 
Keep the yogurt in your hair till it dries.. about one hour. When you feel your hair getting stiff, wash it off. It controls hairfall and promotes healthy hair.. but you would have to do it for a few weeks to see the results. The only thing is, the yogurt looks kind of.. gross.. when you leave methi seeds in there for 2 days (keep it inside fridge) and it’s going to be a lil messy when you apply to your hair.. but it’s worth it 