Hanen More Than Words

Hi

My daughter is 21 months and waiting to be assessed for ASD. 

She has a speech and language delay...she is currently not saying any words, doesn't not point or gesture and understands very little (2 or 3 words). 

I am awaiting a telephone consultation with a Speech and Language Therapist and I think it will be some time before she has a face to face assessment, due to Covid-19. 

I have seen the Hanen More than Words book/DVD and I just wondered if anyone had ever used it and, if so, would they recommend it?

Thanks.