Dagger 2 Constructor Injection not happening before module called

I'm learning Dagger 2 and am working on an app. I have a settings module which depends on a settings manager which depends on a shared preferences manager. My problem is that my Settings Module is not getting injected with a settings manager before it itself is being called. That settings manager needs a SharedPrefsManager which is also not being injected anywhere.

What am I doing wrong?

Snippets in order of dependency:

@Module
public class SettingsModule {   
    @Inject SettingsManager manager;

    @Provides
    @TimeControl
    int[] provideResetTime(){
        return manager.getResetTime();
    }

    @Provides
    @ThemeControl
    int provideThemeID(){
        return manager.getTheme();
    }
}

Depends on Settings Manager:

public class SettingsManager{
    private SharedPreferencesManager manager;
    @Inject
    SettingsManager(SharedPreferencesManager manager){
        this.manager = manager;
    }
}

Depends on Shared prefs manager:

public class SharedPreferencesManager {
    private static SharedPreferencesManager instance = null;
    public static SharedPreferencesManager getInstance(){return instance;}
    String prefsKey = "SHAREDPREFSKEY";
    SharedPreferences sharedPrefs = null;
    Context applicationContext = null;

    @Inject
    SharedPreferencesManager(@ApplicationContext Context applicationContext){
        this.prefsKey = prefsKey;
        this.applicationContext = applicationContext;
        sharedPrefs = applicationContext.getSharedPreferences(prefsKey,Context.MODE_PRIVATE);
        instance = this;
    }
}