How to update Diffuse texture with Normal Map?

Yes, you’ve read that right not the other way around. I exported a mixamo model and it has as usual diffuse and normal map. The detail in the diffuse map is almost none, just a solid color while all the detail is in normal map. I will use this model in an android game and I will only use diffuse map and not the normal. I surely don’t want to have any height information considering I want my game to run on low end devices. And this is why I want the detail in normal map to be baked into diffuse. Of course I don’t want that green/blueish color in my diffuse, I just want the outlines. How can I achieve this?

Any help is highly appreciated.
Thanks :slight_smile: