Hello, my son is 12 weeks old. He was exclusively on breast feed till last few days. Since last few days he cries alot when i take him for feeding from breast. when i try alot he latches but takes feeding for few seconds and then stops. But he takes extracted breast milk with bottle. In night time, he take breast feeding. I have also started giving him top up (lactogen). he easily takes that. I am not able to understand why he is doing like this. please suggest. I want him to take breast feed atleast till six months. Please note my milk supply is good enough. He passes urine 8-10 times a day and his weight gain is also good.