Three months into daily LeetCode and I can only solve the ones I've already seen before

I've been doing this every morning before work since April. Progress feels real until I hit something I haven't seen the pattern for, and then it's like none of the reps happened. I can explain sliding window to someone else. I still froze on a sliding window problem last week because the wrapper around it looked unfamiliar. Starting to wonder if I'm actually building intuition or just memorizing a few hundred shapes and hoping the interview picks one I recognize.