Hello!
I have had some great advice from this board on my Collie/Kelpie Cross. www.mumsnet.com/Talk/the_doghouse/4158443-Atypical-collie
and www.mumsnet.com/Talk/the_doghouse/4162322-Atypical-collie-really-is-atypical-collie-DNA-test-surprise.
Can you tell us a bit more about what herding behaviours he is displaying, and when? My boy is at his worst when someone tries to leave the house, but I don't know what triggers your dog. To deal with ours now the second he displays any unwanted behaviour (nipping, etc) he goes straight to time out. No waiting or asking him to stop - it's already too late by then - until he learns more self control we have to remove him immediately from what's stimulating him. It does really work - we take him to the downstairs toilet, which has no windows, and leave him there for a couple of minutes to calm down. And he always does. Strangely he will follow us to the toilet - still barking and trying to nip - so we don't have to try and get a lead on him. It's like he knows he needs to have an intervention!
If you search on YouTube for 'sheepballs' there are lots of videos of games you can play with tennis balls that simulate the herding movement, which might be a good outlet. You could try searching for 'herding games', as well.
Our dog has one of these: www.amazon.co.uk/Jolly-Pets-Soccer-Green-X-Large/dp/B01EMSVU36/ref=sr_1_7?dchild=1&keywords=Jolly+ball&tag=mumsnetforu03-21&qid=1613728896&sr=8-7
The idea is it's too big for him to pick up, so he has to chase and herd it. Ours loves it - we do it in a secure field with him.
You will hate me for saying this, but I think part of dealing with it is coming to terms with the dog in front of you: this is how they are. So I am not sure if 'will it get better' is the right question. We have had our dog for four months, and what I can tell you is that he is not necessarily better - but WE are better with dealing with him, which in turn has made him a calmer and happier dog.
As you'll see from the threads my boy is reactive, but already he is much calmer now we are crating him on car journeys, and enforcing a crate nap twice a day (he is currently in his crate right now, fast asleep). As you know, collies are high energy and also quite highly strung, so working on a 'settle' is really important. We do lots of brain games and sniffing games which he loves. On our walk this morning he had a great time as we saw not a single other dog or person, and he was sniffing for almost the entire walk. Which is why he is now fast asleep.
I do empathise - we were really thrown in at the deep end and it has been very, very difficult. But, I can see light at the end of the tunnel, now. And as I say, it's because we have better strategies for dealing with him, so things don't degenerate into herding/nipping us shouting/getting angry, which just makes it worse.
Good luck and apologies for the length of this, but I hope some if it is helpful!