Dropping from 12 to 8. Will I notice it?

I'm not sure what to expect. Before I tapered off phenibut I was only taking them every other day. Its been a month now that I've taken them everyday. I take half in the morning and hald at night. Today is my second day on 8mg and haven't noticed yet but I'm worried lol. I have a stash if I need to taper a little slower, it's just so hard to know how much I'm breaking off