LoRA that should hopefully swallow your character from both ends, ie: from the head and legs, leaving an exposed torso, with the rest of the body swallowed by the monster.

Keywords:

vore, swallowed from both ends, legs swallowed, head swallowed, torso only

Then specify how you'd like the character to lay and face, ie:

laying on back

laying on side

ass focus

pussy focus

breast focus

etc