This one actually took me the longest to do. Very TP-hungry fight, and you don't have things like TensionMax or Pink/TwinRibbon to help you out, so you'll have to graze somewhat aggressively to end the fight sooner. Not to mention Hypnosis takes up your entire party's turn, so no defending for TP when you use it.
The Devilsknife attacks are definitely the hardest for me, they kind of break my brain a little trying to process them. The second one in particular with the large red Devilsknife usually costs most of my attempts. If there's one that's about to strike the half of the screen you're in, you have to quickly reposition yourself on the other half through the rotating knives.
All the other attacks are not actually that bad just to dodge, but trying to graze them intentionally is what usually gets me. Small silly mistakes here and there from getting greedy. If you've been really aggressive with the grazing you can actually end the fight before the second Devilsknife attack.
If you keep track of your progress on Jevil's tiredness you can Pacify him on the same turn if you know you're one Pirouette away from reaching the end.
1