Nursing challenges


Anyone finding it harder & harder to nurse baby? My son is 7 months and only nurses for 4 mins lately then gets really fussy, arches his back , & screams. Its been going on for weeks now & my supply is totally going to sh* t because of it! (Nursing strike from hell?) I used to pump 5 oz now im lucky to get half of that! He also gets extremely distracted even in dark quiet rooms. Im really stressed b/c im afraid im not producing enough which in turn maybe the reason he is fussy at the breast? Hence not eating as much, and therefore lowering my supply even more! He eats solids & takes expressed milk just fine but i cant keep up with his 6-8 oz each bottle. Any suggestions? I really want to try & make it the whole year !