Hey Lupin and welcome to DV.

I don't think supplements seem to be the right answer for you. I think a lot of supplements and apple juice is just placebo. What I know does work is practice, which I know sounds terrible considering your issues with dedication but motivation and reasons why you want to have lucids will definitely help.

First, dream journalling doesn't have to be a tough or boring exercise. Most people can just right down a few points in their dream journal and it will have the same effect on your recall. So if you don't feel like dream journalling, at least write down some key points. takes 30 seconds.

Second, the best technique for beginners in lucid dreaming is all day awareness. Which can be a bit tough if you are not dedicated or forget during the day but I set an alarm to go off every couple of hours. All day awareness is just practising being aware of your environment at random times during the day. There is a great tutorial which I will list below which goes into further detail.

Anyway, remember that its important have good recall or you may not be able to remember having a lucid dream!

Cheers!

Sporadic Awareness tutorial
Introduction to Lucid Dreaming