Need tips on how to defeat Zenara and Astralym (Hard mode)

Hello! If anyone who has defeated Zenara and Astralym on hard mode has any helpful information they would like to share with me I’d really appreciate it!

I’ve attempted the boss around 10 times now and I haven’t even really come close to succeeding.

The base pals I’m using are 15 maxed out Jetragons, they’re all awakened, level 80, fully condensed, trust level 10, maxed out at the statue of power, and all have 100 IV’s. Their passives are Demon God, Musclehead, Serenity, and Legend.

For my party pals I’m using a maxed out Bellanoir Libero with the passives Demon God, Immortality, Musclehead, and Serenity, and then I have 4 support pals which are: Lapure, Orserk, Hoocrates, and Celesdir Noct. They are all fully condensed and have the passives, Stronghold Strategist, Vanguard, Reload Master, and Idiosyncratic.

Those are the pals I’m using to fight with, other than that I’m using a drone launcher and a plasma rifle to try to get the most out of Orserks partner skill.

The best I’ve done so far was getting them down to 2M HP.

Aside from just shooting the boss and making sure to use Bellanoir’s partner skill every 15 seconds I feel completely lost in there. After all my base pals die and the boss starts targeting my and Bellanoir it ends pretty quickly.

If you have any questions or tips I’d really appreciate them!