How to update NSMenuItem while NSMenu is showing in macOS

timer = Timer.scheduledTimer(withTimeInterval: 1, repeats: true, block: { [weak self] _ in
    let date = Date()
    self?.updateStopItem(seconds: finishDate.timeIntervalSince1970 - date.timeIntervalSince1970)
})
        
RunLoop.main.add(timer!, forMode: .common)

timer = Timer.scheduledTimer(withTimeInterval: 1, repeats: true, block: { [weak self] _ in
    let date = Date()
    DispatchQueue.main.async {
        self?.updateStopItem(seconds: finishDate.timeIntervalSince1970 - date.timeIntervalSince1970)
    }
})