Couple Questions.

So I have been aware of Lucid dreaming for a long time and have tried it multiple times without much luck. But this time, I'm serious. Going through all the steps and plan on following through. My first question is, would a watch be a good reality check? My second question: so I have been keeping a dream journal obviously and I have a good sense of recall even without it, so this morning at around 10 am I was doing some stuff, making a phone call, social media and what not and then I remembered what I had dreamt and wrote it down...does this happen? Like, you won't remember it or remember to write it down when you first wake up but then it comes back to you after having been up for a little bit? Thanks and ant advice is appreciated.