Figma AI make, more balance

I have an educational account. I am using Figma Make IA for rapid prototyping so that, starting in the second half of February, my students can use Figma to recreate the presentation and visualisation aspects (with the creation of components, layout, etc.) of a mobile + web app. I am quickly running out of IA credit. How can I get more IA credits?

Thank you very much and best regards.