Ok, there is absolutly NO WAY you will hurry up the process. First you will need to learn C++ in depth, then learn directX. I won't lie to you, it will take you a long time before you know how to write a game engine.
The only way you might speed the process up at all is to learn C#...because c# is easy, and just as powerful as C++, and can also use DirectX.
Even if you do choose to learn C#, it will still be a good few months, possibly year or so, before you're writing a game engine. And to create your own language capable of using directx you would have to FULLY understand directx, C++, and a simple language. To do that, it would honestly take you YEARS to do.
Don't rush it, you'll get there when you get there. Good luck