I am going on a trip for 13 days to France and I don't want it to affect my progress
France, a country practically radiating culture! You'll surely learn different aspects of it, including language! Try to indulge whenever feasible, and you will find your Duolingo performance progressing immensely. Also, try meeting your daily goal on Duolingo everyday, a few minutes to provoke your memory. Bonne chance! ☺
P.S. I admire your dedication in wanting to progress and learn!