My kiddo is 5 and we have done OPOL since birth. It’s worked out shockingly well, and my kiddo is fluent in both English and Spanish (better in English…but so am I). I’m noticing, though, that her r’s sound like l in Spanish, but not English. She can say “red” correctly, but it’s “lojo” instead of “rojo” in Spanish. Has anyone else has this?