How to teach settle to a reactive dog?

[DownwardsMonopoly]

We are trying to teach leave it and settle but struggling. If our toddler moves or there's some kind of distraction it's running over to play and jump up, we have been researching and see that leave it and settle are the best options in this case? But massively struggling

I did this by using the bed, down, stay command. I built up the time slowly. So when he was very small like 5 seconds then big fuss/treat once mastered then onto 10, 30 etc. Just keep building up the time and rewarding. If he gets up during his bed, stay then just direct him back and start again.
It look quite a few weeks and lots of consistency.

With leave it, I started by putting treats in front of him and having one in my hand. Once he left the treat in front of him (even just looked away from the treat and to me) I gave him the treat in my hand. Again, I started increasing the time. Tbh though if he finds something on the street really interesting he still struggles with this.

These were all when he was a puppy so not a reactive dog but I imagine the same principles apply. Good luck

Oh and I made sure the treats were high value

Settle is such a useful command. We started by placing a towel or mat that she knows is hers and saving some of her kibble at the end of meals, set her down beside you and drop one bit at a time saying settle. Every meal and in the evenings with small bits of carrots or whatever. Now we can get her to settle in the pub or wherever. Sometimes when she is over tired she won't settle so I put on a loose lead and keep her close then she settles. Takes lots of practise and time.

Properly reactive? Like losing its mind/ lunging/barking? Behaviourist. You need to identify why and resolve before it bites.

Just generally a bit nosey and over excited by noisy things general gentle exposure at a distance getting closer each time.