You're at the foot of Mt. Everest asking if there's a shortcut to the top. Learning a second language is like having a child. It's a life long commitment that will consume much of your time for 10 years or so, assuming you really want to be fluent, and will require maintenance thereafter. Consider learning Russian history and culture instead if it sounds too daunting. That's almost always a better choice for native English speakers, in my opinion.