I recommend checking off every recipe in your crafting log. Make at least one of everything. Do every crafting leve at least once. Only resort to out-and-out grinding as a last resort, and if you have to do so, grind stuff that sells well (like lumber or ingots).

Also, mix in Ixali Beast Tribe quests. Variety will help tone down the monotony - and Ixali quests pay off bigtime in the long run, since you can earn big gil selling Ehcatl Sealant.

This method will INCREASE the time it takes to level, but it will be more interesting since you're crafting all kinds of different things.