First thing off WILD isn’t any harder than MILD unless you take a while to fall asleep. As far as your mantra goes are you saying he words or are you concentrating on the meaning
of the words. If you just mindlessly repeat the mantra with no thought to it you won’t have much success. In addition it helps to incubate a dream scene in which you see yourself flying and realize that “I’m Dreaming”. Don’t get caught up in having perfect technique, its like playing sports in that regard, you can have a horrible technique and still be effective.
As for the watch checking…that is a good RC but RC’s need to be done very frequently (on the order of 20-30+ times per day) until they become habit, at which point they will carry over into your dreams.