So my LO is 4.5 weeks and he has always had a great latch until recently and now sometimes he won't latch. We never had problems before and the last few days he struggles to latch. He wouldn't latch on one side but he did the other and earlier he latched and then after 5 minutes stopped but acted like he wanted to latch but he won't. He will then cry out of frustration. Has anyone had this happen before? I EBF but have given him a bottle at times when I have pumped.