Booting into safe mode without keys

I have a jailbroken iPhone 6s running iOS 12.2. It was working well until I used Chimera to jailbreak and it went into a reboot and then got stuck in the Apple logo. (I used Chimera multiple times to jailbreak after a reboot and it had worked pretty well)

I have been trying to boot into safe mode with the volume up key but doesn't seem to work. I don't want to use iTunes to restore because it will upgrade to 12.4 and I won't be able to jailbreak it again.

Is there any other way to boot into safe mode other than the keys? Or is there a way to reset the iPhone with 12.2 itself?

After restarting into non-jailbroken mode, there is an option in the Chimera app to jailbreak with tweaks disabled. (this is Chimera's equivalent of safe mode)