Hello Soumya49
As we have no idea about the type of your tickets, we cannot give serious advice.
If it reads ‘Point-to-point’ or ‘Saver Day Pass’, then you can take any train. If it reads ‘Supersaver’, you must stick to the itinerary as indicated on the ticket.
For security reasons, please do not post any information about your ticket.
Had you asked us before, we would not have suggested to book the Mt. Titlis excursion in advance. The weather might be bad, and the views zero to none.
Kind regards,
Roland