After 9 years of Humira it stopped working for my son ( Crohn's diagnosis after J pouch surgery 10 years ago) .He has been switched to Stelara - started 3 and 1/2 months ago. He had bridge medicines ( cipro, Entocort) but once off those supplemental meds, it does not seem like Stelara is working. How long have people found it takes for Stelara to work? How long do you give it? And has anyone upped their dosage to take it more frequently than 8 weeks? Thank you.