A new Super Strike event will be starting soon in Dragon Ball Z Dokkan Battle (Global) - we don't know the exact date yet. Bandai Namco doesn't reveal too much details. We know for sure that there will be a new heightened difficulty stage and chance to perform Dokkan Awakening on Contemplated Strategies Grandpa Gohan SR.
You'll have to clear new stage to get Awakening Medals required to Dokkan Awaken Grandpa Gohan. We'll know more details soon.