When you start to wean off the breast milk suggest try mixing ¾ breast milk with ¼ regular milk and see if he accepts and tolerates it. If he does, then after a week or so, try doing a bottle mix of ½ breast milk, and ½ regular milk. Gradually go to a bottle mix of ¼ breast milk and ¾ regular milk then totally to all milk. Hoped this helped you.
Thanku so much.......but the thing is he doesnot like the nipple of the bottle