Finishing the main story

[Disco Potato]

Right now I'm at Cleyra Trunk on disk 2, and I have 9 days to finish this game (after that I'll be busy with family things and unable to play until mid-August). Does anyone have any tips that would help finish the main storyline faster? Tips can include ways to quickly beat bosses or powerful enemies, solutions to puzzles, level/equipment/ability/weapon recommendations, and solutions to things that stumped you while playing. I don't usually resort to these kinds of measures, but I don't want to leave the game hanging while I go off and really start forgetting what's going on in the plot. I'm not too concerned about spoilers at this point . Thanks in advance!