I cannot disagree more, I felt the editing and scene transitions were pretty clear. Bane gives his speech in front of the prison at the start of his siege, we see a montage. Cut to Bruce, no longer needing the rope to stand, the tv says "84 days into Gotham Siege." We saw the entire first 84 days of the five months it took for the bomb to detonate in the montage. Bruce's back took 12 weeks to heal before being able to attempt the climb. Cut back to Gotham with the Special Forces soldiers sneaking into Gotham in the food relief trucks for the cops. We see another montage of Blake and the Special Forces scouting the trucks holding the bomb, planning a countermeasure. Blake takes them to see Fox and Miranda, where Fox says the bomb will go off in 23 days. The Special Forces are killed and hung from the bridge. Cut back to the pit where Bruce sees the hung soldiers on the tv. He attempts the climb for a second time, fails and is knocked unconscious. He wakes up and attempts a third climb, without the rope and with supplies for his journey back to gotham, which we found out took him 22 days to get back, as he tells Selina, "That bomb is going off tomorrow."
-Day 1-84: Bane's speech in front of prison. Bruce is immobilized for entire duration allowing broken back to heal.
-Day 85-127: Special Forces sneak into Gotham and begin scouting the trucks with Blake, planning how to take action. Special forces are caught and hung from bridge on day 127, same day Bruce escapes from the pit.
-Day 149: Gordon is caught by Bane and sentenced to "death by exile." Bruce makes back into Gotham, and finds Selina in Old Town. Selina gets Bruce to Fox. Bruce saves Gordon and Blake, frees the cops.
-Day 150: The wall street fight. Bomb goes off. etc...
Believe me, I felt the same way you did after first viewing. With additional viewings however, paying closer attention to details like the tv in the pit, the editing, scene transitions, and timeline are pretty damn clear.