My baby is not taking milk past 4days. He starts sucking but in 5min he stops sucking and starts crying he searches for the nipple once he gets into latching he sucks for nxt 2seconds and starts crying this keeps on continuing..

Are you getting enough milk supply..? Read this articles Ways To Increase Breastmilk Naturally
Recipe On How To Increase BreastMilk
How To Increase Breast Milk

Hi Malar this happens only when the baby is not given good position to drink milk. Give a comfortable position, use a pillow and hold the baby. Baby's neck should not feel the pressure, if his neck pains he will obviously unlatch. Watch lot of YouTube videos on latching.