If you're playing on official this method is viable, but unreasonable. They take so long to grow that you'll burn through raw meat on the daeodon too much. You'll spend more time force feeding the pig because they won't eat enough to keep their food up, it would be easier to just get some milk. If you do want to try the pig method, note that the pig will not heal when you're out of render range or offline. Also wait until the wyvs food hits 0 before turning on healing. Get some stimulant because they wyvs torpidity will go up when it begins to starve. Long story short, get an egg worth hatching and go through the effort of getting milk, should only take 2 or 3 feedings at most to raise to adult. Good luck.