hi tanvi yes it's ok to poop like day.also you can gv one full small banana properly mashed.also baby will demand for formula as they are taking food juz for taste bm is the main source of nutrition for nw.

today he eat one full banana and if i give him more he will eat that too is it okies to give him one complete banana

one more thing i want to ask ki jese usse banana ya cerelac diya then after few minutes he start crying and demand for milk and he drink same quantity before introducing solids

Give him water as wel. Yes it's fine. Give in small quantities and increase slowly. Introduce one new food at a time.. give that for continuous 3 days before introducing new one. Have patience if baby spits, doesn't like or vomit. Any food should be soft and completely mashed and in thin consistency so that baby can swallow with ease.