From Jhinu, it takes around 4 to 5 days to get to ABC. Here is an overview of an itinerary:
Day 1: Jhino to Chhomrong (2,170) - 5-6 hours
Day 2: Chhomrong to Himalaya (2,920m) - 6 hours
Day 3: Himalaya to Annapurna Base Camp (4,130m) - 6-7 hours
Day 4: ABC to Bamboo (2,340m) - 6-7 hours
Day 5: Bamboo to Jhino (1,780m) - 5-6 hours
Duration: 5 days of gradual altitude acclimatization, walking through very picturesque villages and forests. Also, people reach ABC from Jhino in 2-3 days as well. This is not good, actually. They may get altitude sickness deu to quick pacing and excessive elevation gain.