Maybe take them to lunch on transit to help ease the scary new things factor of taking transit. Once they're comfortable they may be more inclined to do it for a commute.
Are there any communities for the partners of trans people?
I know it would be best if I create the content I want to see here, but I don't feel qualified to mod on my own. Most of the posts on Reddit are people whose partners have just began transition, and I haven't been through that.
Maybe take them to lunch on transit to help ease the scary new things factor of taking transit. Once they're comfortable they may be more inclined to do it for a commute.