I just wanted to share my knowledge with other people. Their is a really simple way to get your dragons to grow up. Use a click site.
The click site I use is dragonnery (search that up in google, the address is NOT dragonnery.com). On most click sites, their is an emergency list. To put your dragon on the emergency list, you must have it's code. The dragon code is the last part of the URL when you visit your dragon. It is usually 4 didgits, sometimes 5. The emergency list is for dragons with 3 days or less left.
I hope this helped. :3