How do I have seprate screen when use splashscreen?

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Python

Kivy

Hi everybody, I have designed a splash screen that will display the logo of the app and after 3 seconds it will be transferred to the login page. The splash and login screens are designed in two separate .kv files. The problem I have encountered is that I have a Repeating loop and screens are displayed synchronous after 3 sec.

What I have tried:

main.py file

class SplashScreen(MDScreen):
    def on_enter(self, *args):
        Clock.schedule_once(self.switch_to_home, 3)
    def switch_to_home(self, dt):
        LoginApp().run()
class LoginApp(MDApp):
    def build(self):
        self.manager = ScreenManager()
        self.manager.add_widget(Login(name='login'))
        return self.manager
class StartPage(MDApp):
    def build(self):
        return Builder.load_file('logo.kv')
if __name__ == '__main__':
    StartPage().run()

logo.kv file

ScreenManager:
    orientation:'vertical'
    SplashScreen:
        name: 'Splash'
        Image:
            source:'logo.png'
            pos_hint:{'center_x':0.5,'center_y':.6}
        MDLabel:
            text: "LEITNER"
            halign:'center'
            pos_hint:{'center_x':0.5,'center_y':.3}

login.kv

<Login>:
    name:'login'
    Image:
        source:'logo.png'
        pos_hint:{'center_x':0.5,'center_y':.9}
    MDTextFieldRound:
        id: user
        hint_text: "username"
        icon_right: "account"
        size_hint_x: None
        width: 200
        font_size: 18
        pos_hint: {"center_x": 0.5,'center_y':.7}
    MDTextFieldRound:
        id: password
        hint_text: "password"
        icon_right: "eye-off"
        size_hint_x: None
        width: 200
        font_size: 18
        pos_hint: {"center_x": 0.5,'center_y':.6}
        password: True
    MDRoundFlatButton:
        text: "LOG IN"
        font_size: 12
        pos_hint: {"center_x": 0.5,'center_y':.4}
        on_press: root.connect()

login.py file

from kivy.uix.screenmanager import Screen, SlideTransition
from kivymd.toast import toast
class Login(Screen):
    pass

    def connect(self):
        toast('Login and Password are correct!')