Progression for elevated bridge?

I've been doing the thoracic bridge workout for a long time and still can't do a single elevated bridge. My shoulders don't have the strength in the up and back position to push up to one elevated bridge. I know it says to use legs but still can't do it. Are there progressions leading up to this move? Thank you.

HI Kevin, can I see one of your attempts? you can consider using a bigger hands distance so that you can use more the shoulders and less the triceps and then move hands closer.