Personally I don't think not being able to lie on your back is a problem; all my lucids have been Dream Induced (i.e. I realised I was dreaming while having a non-lucid dream) and I get much better rates of success with this if I don't worry about my sleeping position...in fact I'm pretty sure I fall asleep on my side most of the time.
If you've read the basics then I'm sure you're aware of the apparent importance of keeping a dream journal - don't worry if that's too problematic for you though, it's absolutely not necessary as long as you still take time to recall of your dreams in as much detail as possible in the morning.
That's really all I can help with...if you want my favourite technique, that'd be All Day Awareness. And I always say this to new people and link them to this tutorial, because it works wonders for me and for me at least is much easier to do than WILDing (slipping into a lucid dream immediately from being conscious)

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