Listen to Trixie regarding how long it may take to get over your loss.
It took me about a year to get back to normal after my grandfather finally died. He had a slow-growing tumor between his skull and his brain that gradually impaired and then killed him. He was completely unaware of his surroundings for the last 2 years of his life.
Even though it was a relief when he died, it was still a big loss that took a long time to get over.