Hi
Not sure if my first reply posted. Apologies if i have posted twice.
Have you given him a chance to decompress? It sounds like its all too much ,too soon for him, and hes overstimulated and overwhelmed.I would give him plenty of space and lots of calm. Let him get used to his surroundings and your family, and figure it all out for himself, and in his time.I would also give him a break from his walks right now....up to 3 hours a day for him is a lot. Do lots of enrichment exercises with him. That will get his brain working, and will tire him out just as much as walk would, if not more. He is probably stressed and his "spoons" are most likely maxed out and he needs time for them to come down, then, when you do go back out for walks, build it up slowly and give him lots of sniffy walks as opposed to off lead running around. let him get used to the area. There are lots of facebook groups that can offer a lot of help..Reactive dogs UK is full of advice and friendly support. Its worth joining and have a good read of their files, and even ask for help within the group. Time is your friend. Good Luck
(The 3 Days, 3 Weeks, 3 Month Rule
In the first 3 days)
Your new dog will be overwhelmed with his new surroundings. He will not be comfortable enough to be himself. Don’t be alarmed if he doesn’t want to eat for the first couple of days, many dogs don’t eat when they are stressed. He may shut down and want to curl up in his crate or under the table. He may be scared and unsure what is going on. Or he may be the opposite and test you to see what he can get away with, kind of like a teenager.
After 3 weeks,
he’s starting to settle in, feeling more comfortable, and realizing this really may be his forever home. He has figured out his environment and getting into the routine that you have set. He lets his guard down and may start showing his real personality. Behavior issues may start showing, this is your time to be a strong pack leader and show him what is right and wrong.