macbook air keeps restarting bc of a problem (filevault decrypting is stuck in 99)

I turned my FileVault off (yes big mistake) without researching anything. I don't know what made me turn it off brain fart or curiosity maybe. t was all okay until the decryption reached 99% when I plug in my laptop to the charger, My laptop restarts on its own, is it supposed to do that? The battery drains fast when I try to use my laptop (charger unplugged). I have tried disabling and enabling it from terminal but it ends up only showing this

$ sudo fdesetup disable
Password:
Enter the user name://
Enter the password for user '//':
FileVault was not disabled (2).


$ fdesetup status
FileVault is On.
Decryption in progress: Percent completed = 99

I don't know how to fix it or what to do, I'm not sure if it's supposed to do that.