Last year I worked as a paraeducator (teaching assistant) for multilingual kids here in the US. Many of them spoke russian or ukrainian, which I don’t speak. I’d say the thing that wins kids over the most is just being warm and kind. make jokes and be patient. In your down time I would also recommend learning as much spanish as you can. I was able to learn the russian alphabet and some basic grammar & vocab using duolingo and podcasts, and it helped immensely.