This is a topic of discussion in the Nevada Bar, and was one of the topics discussed at the recent Advanced Family Law conference. One of the judges presenting suggested using my analysis for when and how marijuana should be treated in the family courts--you can find that analysis here. It is a little unclear from your question who is living where and what custodial provisions are in place; you should probably confer with a family law specialist as to whether a modification in the current custody orders is warranted.
Answered on Dec 26th, 2019 at 6:16 AM