Black out

I drink pretty much everyday and have for a little over a year I’d say. I drink vodka and sugar free juice because of keto. It seems like I’m only remembering bits and pieces of my night after 2 or 3 drinks. This started happening about 6 months ago and has only gotten worse. What’s going on? Is it what im mixing the vodka with? I don’t really want to quit drinking but I can’t keep dealing with this. I’m sort of in a relationship with someone and I can’t keep forgetting and repeating myself. Maybe I do need to stop drinking.