This is always a problem whenever a person becomes habituated to laxatives.
Sudden stoppage of laxatives result in rebound constipation
Keep on taking Plenty of water along with fresh fruits and green vegetables.
Do regular exercises as these help in peristalsis
movement of your intestines.
Take some fiber with water twice a day like psyllium
These fibers take a long time to have proper effect and so you have to take them regularly for few months.
Start taking your dulcolax
tablets every 2nd day and tnen after few weeks start taking every 3rd day.
Withdraw fro dulcolax gradually.
Although this is going to take few months to come out of your addiction to laxatives,but there is no other alternative.You have to gradually condition your colonic motor activity.