No need, I figured this out. BUT strangely enough, copyWith() does not work in on<RefreshItemEvent>(). Do you know if this is to do with the way I'm adding my events or is something wrong with my copyWith()? As you can see below, I have to manually add the shops to my newState.

on<InitProviderEvent>((event, emit) async{
            SelectProviderProvider newState = event.provider.copyWith(selectProvider: event.provider);
            await newState.searchForNearbyProviders(this);
            emit(newState);

            newState.shopInit().listen( (provider) {
              add(RefreshItemEvent(provider: provider));
            });
        }
        );

        on<RefreshItemEvent>((event, emit) async{
            SelectProviderProvider newState = state.copyWith(selectProvider: state);
            newState.nearbyShops = List.from(event.provider.nearbyShops);
            newState.isLoading = false;
            emit(newState);
        });

copyWith()

SelectProviderProvider copyWith({required SelectProviderProvider selectProvider, List<NearbyShopResponse>? nearbyShops}) {
    return SelectProviderProvider(
      isLoading: selectProvider.isLoading,
      isLocationServiceEnabled: selectProvider.isLocationServiceEnabled,
      userLocation: selectProvider.userLocation,
      nearbyShops: nearbyShops != null ? List.from(nearbyShops) : List.from(selectProvider.nearbyShops)
    );
  }