You may try including Udupi and honnavar because this place also same vibe in the alleppey And following this itinerary: Day 01: Udupi ( malpe beach, st.mary's island , manipal and Hasta Shilpa Village in manipal)
Day 02 : Murdeeswar, Mirjan fort and honnavar (sharavathi kandla mangrove boardwalk and sharavathi backwater boat ride)
Day 03: Gokarna( mahabaleshwar temple,mahaganapathi temple, jatayu teertha, gokarna main beach) Day 04: vibhuthi falls and Yana caves
day 05 : Dandeli