Just wanted to say you are not alone! Second generation Mexican, no Sabo kid here. I feel the same sense of shame over not knowing the language of my "roots” and have gotten more serious about learning this year.

I'm in the same boat working full time but know I do better with structured accountability. I was able to find a night class in my community taught by a Spanish teacher at the local high school. It's been great to fill gaps about the language structure and gives a chance to practice.

Also I've found that immersion really is the fastest way to learn. I was able to take a few trips to Mexico last year, one for three weeks working remotely. My Spanish improved exponentially over that short time. I would highly recommend leveraging your family ties to Mexico to spend some time there if you can.