Help me to identify an entity

I need to identify what type of entity drains energy during sleep.

Both my husband and I have dreamed about this entity. It appears as a man or without any form, with a very bad presence. It makes your body tremble while it steals your energy.

I don't think it is a demon. At least not anyone from high hierarchies, I guess. Sometimes it appears like a man, but mostly is invisible. The frist time it happend we cleaned the house and performed the LRP. It worked but now (months later) this thing come back again.

Ps. It can appear like a sleep paralisys demon. One time my husband was awake when the thing started to draining him.
The contact with me was minor and only in my dreams once.

Can you guys help me to identificate this?