I think 4-5-1 V style will get the job done. Attack both flanks with long passes and i think you should use man-on-man marking.

I once used this formation against the 3n-3w-1-1-2 last 3 weeks, and i won 3-0.. but i was playing against a weaker team. But i'm quite confident with 4-5-1 V because your dmc can block his amc's attack, and you can take advantage of the absence of the fullbacks with 4 players on your flanks. Put red arrows on your wingers. But if he manages to change his formation in the middle of the game, i suggest you to try to gamble your formation. Look for what he has and what he does not have in his formation and take advantage of it.

Goodluck from a newbie.