WW010 that must be very difficult for you and really a great shame that your husband gets such little enjoyment from his grandchildren. Mine would like to retire early so that he can spend more time with them, not less.
I wonder if your grandchildren are very young? My husband gets very excited when they turn 2 years old and can interact, before that age he’s just biding his time.
He loved them when they were babies. But the time LD1 was over they were 1.5 and 3. He didn’t enjoy that age at all! Now our oldest is nearly 4 he’s much better. Enjoys her chat. I think it probably was the shock of the noise and chaos after 3 months of absolute peace. He was jealous though too. Still is a bit. Complains if I spend too much time, with them. I strike a balance 😊