I’m in the same boat as you! Nursery have given me some tips about asking them to put on their listening ears and that we won’t be friends if anymore if they do a certain something. We’ve introduced time outs and recently started doing a warning of a count to 3, which weirdly seems to work amazingly well, so maybe nursery do that too. If they attend a childcare setting you could ask them for some tips too. Hope that helps. x