You can return back to the US after 2 months because there is no law or rules that say you cannot. But if asked by immigration officers at the port of entry (airport) you have to be able to give them a convincing answer for why you stayed 6 months last time and why you are returning back in 2 months. If they doubt that you are illegally working in the USA, they can have your bag checked, so do not bring stuffs like CV in it. If you like more info, you can PM me.