If you are rushing, a short and respectful Chetyavandan vidhi can be done like this:

Small Chetyavandan Vidhi

1. Pratikraman posture / standing respectfully
2. Namo Arihantanam
3. Namo Siddhanam
4. Namo Ayariyanam
5. Namo Uvajjhayanam
6. Namo Loe Savva-sahunam
7. Ichchhami khamāsamano vandium

- Offer humility and forgiveness inwardly

1. Micchhāmi dukkadam

- Seek forgiveness from all living beings

1. Bhaktipūrvak darshan / bowing mentally or physically before the Jina
2. End with a short prayer for right faith, right knowledge, and right conduct

Very short form

• Navkar Mantra
• Khamasamana / Micchhāmi dukkadam
• Mental devotion to the Tirthankar

Important

• Do it with sincerity, not as a mechanical formality.
• Even a short vidhi done with bhav is valuable.
• Different Jain traditions may have slightly different short forms, so follow your guru, temple, or sangh tradition when possible.

If needed, I can also give you a 2-minute mobile-version Chetyavandan vidhi in very simple words.