How can i reduce my swollen gums after braces? and fast!?

All you're doing is the right thing to do. But should be done in a right way. Additionally you should do tongue scrapping. It won't help you directly reducing the swollen gums but scrapping tongue will reduce burden of bacteria and thus reduce chance of infection of gum which will make your gums more swollen.... Brushing technique is important. Adequate flossing is required. Have patience and relax.