Need advice

I’m a preschool SLP who specializes in autism. Im looking for advice and what kind of therapy you would do with someone with a severe brain injury from an accident, with lesions in the corpus callosum. He is on an uncuffed trach as well as a feeding tube. I suggested a speaking valve being that he does make some noises (grunting). Sadly, I have no experience in this area of our field. I am looking for people to share some advice, tips, tricks, etc so I can help my friend! They have an SLP come to their home but they are looking for things they can do as well. Thank you everyone!