Xbos series s

I need help to make my adapter work better on the Xbox Series S. I connect it and it works for about 5 minutes, then it disconnects. After that, I have to unplug the controller or the adapter and plug it back in. But if I only play with the controller, even though the adapter and the mnk are connected, it doesn't turn off. However, when I play with the mnk, that's when it turns off. Any advice to prevent it from disconnecting? (I have the external power connected.)