The way Trump was so enraged by NYT revealing US attack on Russian power grid. I don't think he knew. They may not be briefing him about Russia in fear that he would leak Intel to Russia. Of course he doesn't read so they may have given him printed brief.
If you want to keep something secret from TRUMP. Then give him the secret in a written briefing. Job Done
Why would you want to keep it secret from him? Can he not be trusted?