I have an adult autistic ds who is crippled by his anxiety who managed to complete his speech credit through an online class. Since you mentioned that the disability office said the requirements are set by the state, that makes me wonder if this is a public U. If so, check and see if there are any CCs that have reciprocity agreements in place for the speech class and if they offer an online version or if there is an ecampus version that he can take to satisfy it. (If your state doesn’t have an ecampus option, look at states that do and see if the course number has a course approval already in place. TN is one state that I know has ecampus versions of courses. https://tnecampus.info
If an agreement does not already exist, you can see if the course could receive approval.