You shouldn't need to repitch. If I'm understanding correctly, it's been fermenting for less than 3 weeks.
As far as the gelatine, I don't use fining or find it necessary. I doubt that it is so effective that literally *all* of the yeast would precipitate out, thus necessitating adding more yeast. It's just ground up bones and hooves after all 
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Oh don't give me none more of that Old Janx Spirit
No, don't you give me none more of that Old Janx Spirit
For my head will fly, my tongue will lie, my eyes will fry and I may die
Won't you pour me one more of that sinful Old Janx Spirit
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