Little alters only front when smoking cannabis??

So, I have a med card, and smoke for chronic pain, 3 anxiety disorders, DID, and BPD. i find it helps immensely but I've noticed my littles who almost never front alone and also don't front much in general seem to love to front without anyone co-con nearby when I'm high. does this happen to anyone and also is there a way I can get my littles to front outside of smoking as my current therapist has expressed wanting to work with them more. As he mainly has been working with my protectors and persecutors.