You don't have to wait 3 months to put your fish into the tank, but yes your tank is WAY over stocked for it being uncycled. I would just leave your Oscars where they are and do a fish cycle. This should take about a month to do. Also go and buy yourself a chemical test kit. The test strips are not the best, good for a general idea but not for exact parmeters. Just learn from this and do your research from now on BEFORE buying your fish.
The Oscars won't fit in your 55 in a year by the way, they are fast growers and love to eat, which just adds to the filth being produced in your tank.
The Oscars won't fit in your 55 in a year by the way, they are fast growers and love to eat, which just adds to the filth being produced in your tank.

i suck at keeping fish..i know how to cycle a tank but i have a really bad ADHD problem and no patience. after 3 weeks with the first tank i thought it would be good because i had had a couple ammonia spikes and things were calming down
and i am.