You can't, you just have to wait the desired time. Sorry
You either wait or buy food
You have to breed one; though it will be very hard.
The most effective method of breeding a diamond dragon is using a ice dragon and mine dragon. This has a 9% success rate. The egg is diamond, and takes 30 hours to hatch.
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The most effective method of breeding a glass dragon is using an earth dragon and light dragon. This has a 35% success rate. The egg is yellow with gray diamonds, and takes 12.5 hours to hatch.
The most effective method of breeding a victory dragon is using a snow dragon and lightning dragon. This has a 21% success rate. The egg is gold with gold wings, and takes 36 hours to hatch.
The most effective method of breeding a summer dragon is using a water dragon and scorch dragon. This has a 16% success rate. The egg is yellow with a blue caterpillar design, and takes 24 hours to hatch.
The most effective method of breeding an amber dragon is using a quake dragon and evergreen dragon. This has a 15% success rate. The egg is amber colored with a baby dragon, and takes 30.5 hours to hatch.
The most effective method of breeding a platinum dragon is using a water dragon and metal dragon. This has a 14% success rate. The egg is purple with lighter purple spots, and takes 49 hours to hatch.
Breed a mud dragon and an air dragon. It worked for me first time. It will help if you get both dragons to lvl 10.
No, you have to breed it using the breeding cave.
I got it by using a Lightning and Plant Dragon.