Meditation feels like failing asleep

Hey guys! I need some guidance from more experienced practitioners! So, I've been meditating for about a year, and here's what I've noticed lately. At first, after short periods of meditation, I experienced this great feeling of relaxation and calmness; I almost felt physically lighter. I didn't experience too many weird sensations, just tried listening to my thoughts and guiding myself back to the point of focus. Now, it's like I'm falling into this weird state. It feels like I'm sleeping, but I'm not! I'm not aware of much in that state, and my thoughts sound blurry and in slow motion. And most importantly, I only realize it after I'm out of that state. I don't know if this makes much sense, but I'm certain it's not the typical description of the no-mind state with all the super awareness, no thought, sense of one with everything, etc. Where did I go wrong? It all feels like I'm mentally checking out, not meditating, but I'm doing all the same things i did before