Help my autistic son find his voice! Tampa FL

I know this may be different than most posts here, but this year all I want is to help my son communicate. He is 4 years old and was just diagnosed with autism in September of this year. He is nonverbal and has been working with many therapists to help him find his voice. We are asking if anyone could help us by making our wish come true and can get him a AAC device. He has been learning how to use a speech tablet at speech therapy and it is helping him, however there is a wait list of almost a year for a device. He is currently in pre k and will begin Kindergarden next August. The AAC speech tablet wold offer him the voice we have been trying years to find.