Need Itinerary Suggestions

Hi all, I would be travelling from India on my Honeymoon to Switzerland on April 28th to May 05th. Flights are to and back from Zurich itself.

I had a cousin that used to live there and suggested me 3 cities to visit; however, I have seen a lot of Reddit posts talking about swapping those with the lesser known ones due to being overpriced. The suggested cities are:

1. Luzern (must visit Titlis)
2. ⁠interlaken (must visit Jungfraugh)
3. ⁠other option - Zermatt (Matterhorn)

Now I know this might be too much to ask, but could anyone help me with a day wise itinerary considering it’s a honeymoon trip?

Also, I will be landing at 19:50 Zurich time and departure is also at 21:10 Zurich time.

Thank you