Answer
Learning Spanish after moving is possible, but it requires considerable effort. In a new language, an adult often feels like a child: they know what they want to say, but cannot put their thoughts into words quickly and accurately.
The difficulty is compounded by Rioplatense Spanish: the local pronunciation, vos instead of tú, and the fast pace can feel unfamiliar at first. At the same time, you do not need to wait until you reach an ideal level to start living there: an A2 level is enough for simple tasks, and B1 already significantly reduces reliance on others’ help.
It is better to learn the language not in the abstract, but for real-life situations: a doctor’s appointment, renting, shopping, banking, paperwork and transport. As you get older, the stress of learning may be greater, so short, regular study sessions and breaks after difficult conversations are especially important.