Hi.
(please don’t be angry with me, because I have different opinion 
).
I don’t think it’s possible to have LD and forget it, because the whole point of having LD is, that you are fully aware while dreaming. Hence, you should remember it.
But the good thing is, that with practise you get better. So, don’t give up Try some other technique - try moving your eyes from your left to your right - like in REM.