I'm trying to imagine what I would do in your shoes (I did DD's enrichment myself... she has only 1 younger sib so I could manage).

What about advertising at the university for a student? You may be able to find someone with a schedule that matches yours and your DS's who could use some part time tutoring hours. It could be a psychology student, or even a botany student (your DS would love that smile )

Good luck - I hope you figure something out smile