You can control the pace at which the buds flower. To hasten flowering, place the pot where there is indirect sunlight at the balcony or the porch. Do not, please do not, place it in direct sunlight. A warm and sunny environment will make the plant bloom too quickly and the flowers fade faster. Again, use the bottom watering method as water on the buds can cause them to rot.
Azaleas require a lot of water, so make sure the medium is wet.
All azalea varieties sold by florists are handled alike at home. Keep the plant in a cool spot while in flower, especially at night. Otherwise, prolonging the blooms of azaleas is essentially the same as the care taken for poinsettias. If you have maintained the plant well, it is now ready for re-potting. Use only pure peat moss, especially the coarse, lumpy sort as it assures good aeration and drainage.