Anyone who has farmed there way up probably like me has an ungodly amount of low quality of dragon feed…. I suggest that instead of using gold to speed up the healing, you could use food obviously the high-quality the food. The more time would be subtracted from how long it takes your dragon to heal. Even if you were using like 50m (or more) poor dragon food it would be worth it
#Dragon food to heal the lizard
vernal timber
molten osprey
This was already suggested