I agree that you are getting close! :) Keep up the progress (without neglecting your studies of course). For the dream mentioned in your post before your last post (the longer one), that does
sound like a dream about lucid dreaming, but you might also want to read my reply to Habba that I just posted in his workbook:
#132. It has some things to consider when dealing with the notion of a false lucid.
On your question about changing your mantra: Have you thought about making it in French (or maybe you are already doing that)? I hear that it is recommended to use your native language as it may make the connections between those neurons stronger...or some such technical explanation. :P
You may also want to include in your visualizations a simple (simple, for ease of transfer into the dream) self awareness moment of stopping and reflecting on your state, so that you fully realize "where" you are (experiencing a dream, an adventure while asleep, where you have a profound effect on everything around you, directly or indirectly).