English writing help for Renato, preparing for the university entrance exam

My son, Renato, is 11 and in the final year of school. Renato loves school but English writing has been a struggle since the school was closed during the strikes. The university entrance exam is in August. We can't afford a private tutor, and the school's free sessions are full. We're looking for a volunteer who could spend one or two hours a week, in person in São Paulo or online, for about twenty weeks. Renato is polite, hardworking and eager. We have a quiet space and a laptop for online sessions. I'll always be at home for in-person sessions. If you're a teacher, student or professional who feels comfortable in English writing, you could change the course of Renato's year. Even a small gift gets used right away and I'll thank you myself.