Calf born Thursday, didn't seem to be strong enough to nurse the heifer. It sucked about 3/4 bottle of colostrum on its own. Since then seems it is not sucking momma any, tries but seems to loose interest. Does not suck a bottle either, we have been feeding it. Put heifer in chute and got it to latch on for a few minutes the first time but second try it just seems to put the teat in its mouth and suck a few times and quite. I can get milk out of all 4 quarters. I think its tongue seems a little swollen. It just seems to lack the natural sucking strength, just not very aggressive. Any suggestions?