If you desperatly missing milk (and if you have no life) you can just give to your growing wyvern a enduro stew every 15 minute, this while prevent her for losing health when her food while reach 0, and while keep up the matuation process
When walking your baby wyvern don't think to yourself I'll just take it for a little swim through this lake. Because as soon as it hits the water it starts to fly and it won't stop! When you whistle to stop it just starts to fly off into the sunset. Say good buy to your wyvern and all the milk in its inventory.
*Finding out you can tame dragons*
"YEEEEESSSSSSS DRAGONS YEEEEEAAAAASSSSSSS"
Wiki: "You must go into its nest with a fast bird, steal an egg, run away from 50+ wyverns trying to kill you, go back, get a female wyvern, knock it out, get its milk to feed your baby wyvern, raise your baby wyvern for many real life days, never sleep, starve, make sure you got lots of milk, get arthritis, play non-stop, never see society again, boom you have yourself a wyvern."
Use for food consumption, f is amount of food baby dragon has, h is hours till it hits zero. This formula works for when a player of the same tribe is active on the server. The food consumption decreases when there are no tribe mates on
Don't be afraid to go for eggs with a Pteradon.. A Pteradon with 1200 to 2200 stam can out run a wyvern after the nerf using the sprint speed and the barrell roll ability on them. Common misconseption is that you can't use them anymore after nerf.
Do not try to hatch an egg near the wyvern trench. when u drop the egg the wyverns will come out and try to kill u. But the wyverns that come out are only females you can use this to ur advantage to get milk.