Is it possible to boost XP from training Chocobo companion in the stable to 1% of a level?

I'm going from rank 16 to 17 2.9 million xp needed and training in a clean stable only gives 17650 xp. Which is the same as I was getting in earlier ranks.

It would still take 100% feedings for one rank, so 100 hours if that was the only way someone did it.