What is it?!?!

Idk what’s going on but for the past week or so, whenever it’s time for my little in FL sleep be it nap time or bed time, he fights it until I let him nurse. Like full out screaming fits. And then at nap time I can’t seem to put him down afterwards without him waking up. Usually at night we “side lie” but now when I scoot away he starts rooting for me. He also has started this thing where he grabs on to my boob almost digging his nails in while he’s nursing.