I've been taking CBD daily in the evening for sleep (can't find a quality source if CBN where I live - I am interned tho, the research is compelling for sleep) and I find it can act almost like an appetite suppressant.
Not sure where you live, but this is what I use for CBN: https://www.charlottesweb.com/products/stay-asleep-cbn-gummi...
One gummy (10mg) works for about 2-3 nights, then I get another 2-3 nights effect with 20mg. Then I have to cease taking it for several days.