Honestly it’s unusual I’ve never heard of anyone naming their child after a therapist before however I do not see anything wrong with it at all. [name_f]Honour[/name_f] names should be about honouring someone who means something to you, has characteristics you admire I actually find it more relevant and meaningful to choose to honour someone like your therapist who had a profound effect on you as an individual then a random great great great aunt. I love this idea and I say go for it 
I also want to say well done to @Harvest-Endellion for calling out the strange views on therapy that have been written on this post feels a bit off. There is so shame behind therapy!!!