Screen refresh issue in CarPlay

I am new to CarPlay development. I am working on an app that has four tabs. The first tab has a POI template. I make an API call, once the data is received, I need to refresh the POI template to display the data received. Below is a sample code. Please guide me on this. Right now I am pushing a new template once data is obtained which is not the right behaviour

func templateApplicationScene(_ templateApplicationScene: CPTemplateApplicationScene, didConnect interfaceController: CPInterfaceController) {
        self.interfaceController = interfaceController
        let tabs = CPTabBarTemplate(templates: [firstTab(), secondTab(), thirdTab(), fourthTab()])
        interfaceController.setRootTemplate(tabs,
                                            animated: true,
                                            completion: nil)
    }
    
    func firstTab() -> CPTemplate {
        // Placeholder template while data is loading
        let placeholderPOI = CPPointOfInterest(location: MKMapItem(placemark: MKPlacemark(coordinate: CLLocationCoordinate2D(latitude: 0.0, longitude: 0.0))),
                                               title: "Loading...",
                                               subtitle: "",
                                               summary: "Data is currently loading",
                                               detailTitle: "",
                                               detailSubtitle: "",
                                               detailSummary: "",
                                               pinImage: nil)
        let placeholderTemplate = CPPointOfInterestTemplate(title: "EV Stations", pointsOfInterest: [placeholderPOI], selectedIndex: 0)
        
        // Asynchronously update the template once data is loaded
        Task {
            await loadAndUpdateTimeConsumingData(for: placeholderTemplate)
        }
        
        return placeholderTemplate
    }
    

    func loadAndUpdateTimeConsumingData(for template: CPPointOfInterestTemplate) async {
        
        do {
            // Simulate a 1-minute delay
            try await Task.sleep(nanoseconds: 60 * 1_000_000_000)
            
            // Mock data
            let stations = [Station1(name: "Station 1", city: "City A", address: "123 Lane", coordinates: (latitude: 12.3456, longitude: 76.7890))]
            let pointsOfInterest = stations.map { station -> CPPointOfInterest in
                let mapItem = MKMapItem(placemark: MKPlacemark(coordinate: CLLocationCoordinate2D(latitude: station.coordinates.latitude, longitude: station.coordinates.longitude)))
                return CPPointOfInterest(location: mapItem,
                                         title: station.name,
                                         subtitle: station.city,
                                         summary: station.address,
                                         detailTitle: "",
                                         detailSubtitle: "",
                                         detailSummary: "",
                                         pinImage: nil)
            }
            
            // Update the template
            let poiTemplate = CPPointOfInterestTemplate(title: "EV Stations", pointsOfInterest: pointsOfInterest, selectedIndex: 0)
                await MainActor.run {
                    self.interfaceController?.pushTemplate(poiTemplate, animated: true, completion: nil)
                }
        } catch {
            
        }
        
    }