To add on to others, I feel one really important part about RCs is prospective memory, and people barely talk about it. Whether because it isn't effective or people just focus on the RCs but never learned about prospective memory, I don't know, but it seemed to be a pretty important part for MILD according to Stephen Laberge. You can see the exercise here: http://www.dreamviews.com/general-lucid-discussion/80177-exercise-prospective-memory-training.html

I've had a few LDs before, but this morning had my real first legit DILD where I thought "this feels strange, am I dreaming?" I got back into dream journaling about 2 weeks ago, started practicing RCs properly a few days ago, started the prospective memory exercise yesterday, and this morning's dream was coupled with WBTB + SSILD. I feel my DILD worked because:

1) SSILD allowed me to more vividly feel what's going on, that's how I was able to feel what I was doing was strange

2) Doing RCs properly had my mindset focused on questioning reality

3) (possibly) as a supplement to 2) my prospective memory reminded me to remember to question reality.