Right side Paralysis. Worried about him.

Hello Dr. My husband (age 35yrs) suffered from brain stroke on 27th July 2016 n got fully right side paralysed n not able to talk. His neurosurgeon said he had some blood clot in left side of the brain n prescribed him to take levipril (thrice in a day), alpha citum(twice in day), idebest, vescurite (once in day) n rosumac gold 20 (once in day) bcz he is a heart patient too. Now in 3 months he is able to walk n his hand is little bit working but still he had problem in speech. He continued physiotherapy n speech therapy both. I want to know how long it takes his recovery to be as he is in his normal life n able to talk. He understands everything but dnt know "what to right", "how to form word n sentence." Sometimes, due to this he got frustrated n irritated. I m very much worried about him.