How long does it take for a 10 gallon tank to cycle with seeding by gravel from a cycled tank?

I dont plan on waiting 5-6 weeks for my 10 gallon to cycle. I will get gravel so seed it to make it go faster. My source of ammonia will be fish flakes every 12 hours. I was wondering how long this would take. I had a 2 gallon tank with a tiny goldfish in it about two years ago that lasted for about 8 months and i never knew about cycling back then, so it wasnt cycled.