Hi Delia, It sounds like the RO is just following him closely but you could ask him if this a normal routine so you have peace of mind.
Usually fentanyl is increased or decreased in 25 mcg doses. They also have a 12.5 patch now to make the transition off it easier. I think he needs to taper down the doses more slowly. Good luck and I hope he is feeling better.
Regards JoAnne

JoAnne - Caregiver to husband, cancer rt. tonsil, mets to soft palate, BOT, 7 lymph nodes - T3N2BM0, stage 4. Robotic assisted surgery, radical neck dissection 2/06; 30 IMTX treatments and 4 cycles of cisplatin completed June 06.