The most common cause of chronic pancreatitis is alcohol consumption. You did not mention whether you were using alcohol and whether you have stopped. I suggest the following steps.
1. Stop alcohol completely
2. Use pancreatic enzyme supplements along with a proton pump inhibitor (PPI)
3. If there is no benefit in pain, the next step is to consider endoscopic dilatation of the pancreatic stricture, if possible.
4. If pain persists despite endoscopic dilatation, resection of the pancreas should be discussed.
5. If pancreatic resection is not feasible, consider nerve block procedures.