Help Changing Dry Bones Walk Cycle

[Metrovania]

Long story short, I'm trying to Re-Texture the SMW Dry-Bones (NPC-189), but am running into some problems because it's sprite contains "Special Frames". Is there anyway to change the amount of walking frames an NPC has in it's walk cycle despite not all the frames being dedicated to movement? Is there perhaps a script I could use? Specifically, I'm trying to give it 8 Walking frames, instead of the usual 2.