Girls ? Has anyone encountered such problems? Son refuses from breastf…

Girls ? Has anyone encountered such problems? Son refuses from breastfeed! Takes only sleepy or half-asleep. When I give him breast he turns his head away and screams at full mouth. Stomachache is not there, ears do not hurt, colic does not bother and stool is normal. He's calm baby when fed. What should I do? How to be? Daughter also refused in this age, I couldn't stand it switched to formula. But with formula too there was such a problem somewhere around 7 plus months. Very troubled. Don't know what it depends on. Does anyone have experience in this case?