Did griffin know about the beleith's activation? I just binge watched all 25 episodes of the berserk anime and I am curious to if Griffith knew that the Beleith was activating when the eclipse started? When they were in the river he thought to himself 


  Stay away from me... If you so much as touch my shoulder we can never go back. 


Did that have any significance? 

I haven't read the manga and from what I've researched there is no second season to it.
You're thinking of chapter 72-73 of the manga, if you want to look it up (Volume 12).

Griffith sits in the lake, picks up the Behelit and remembers what Zodd and Wyald told him. "Use it. Call them. Our guardian angels!". As the solar eclipse happens, he most definitely realizes.

He then crawls backwards, away from the rest of the Band, hoping to not draw them Edit: Guts into the eclipse.

On the matter of sequels, the actual series has no second season. There are the 2013 movies (Berserk: The Golden Age) or the 2016 series ("Berserk 2016").