i think this technic sounds promising. I am sure if you would combine this technic with the cartography of dreams (writing down all the locations you have been on a map)
I believe it would be useful to write down each door on a paper and the location it brings you too and a description of the place. With that you will always keep the pattern. Every time you start the visualisations look at the paper so you are sure to get the order right.

I believe the more you keep to the pattern, the more detailed the visualisations are. And maybe if you are lucky and you keep at it, you will end up at one of these locations in a dream.

I will definitely try this and give you feedback

-kierin