I have had both hips done six years apart. It is a life changing operation and your DH won’t regret it.
Tips:
Buy a wedge for the bed to rest his legs on, get a double one for both ledgs and get one with a lip on the sides so his legs don’t fall off it while he sleeps. He must sleep on his back for at least six weeks.
Get a grabber to pick things up.
Get a sock aid for pulling on socks.
Ask for thread stitches not staples on the wound, I had both and staples are awful being taken out, thread is much better and less painful.
Stick to the 90° rule for six weeks to avoid risk of dislocation.
Slip on shoes, Crocs are amazing for this if not stylish.
Sit on two plastic bags in the car as the top bag twists with you as you get in and out making it much easier. Also recline the seat a bit to get in and out as it gives a bit more room.
Eat more as your body thinks you are injured and needs to repair itself before you are eaten by a sabre toothed tiger - the food is fuel to repair the bone.