Parents near Buenos Aires: could you share school runs for 3 weeks?

I'm Héctor, a parent in Buenos Aires. I'm recovering from hernia surgery and have been told not to drive or carry anything heavy for about 3 weeks. My children are eight and eleven, and the school is 2 miles away. I'm looking for parents or neighbors who could take one or two pick-ups a week, or walk with them. I can do the cooking and homework in return once I'm back on my feet, and I'm glad to share fuel costs. The school knows and is flexible about who collects the children as long as I give your name in advance. Thank you. A few hours from you would make a real difference to our week.