Volunteer tutor needed: biology for a motivated student in Oakland

My younger brother, Zhe, is 16 and in Year 10. Zhe loves school but biology has been a struggle since the school was closed during the pandemic. The GCSE exam is in November. We can't afford a private tutor, and the school's free sessions are full. We're looking for a volunteer who could spend an hour or two a week, in person in Oakland or online, for about twelve weeks. Zhe 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 biology, you could change the course of Zhe's year. You're what makes this possible, and I'll never forget it.