I would be asking the rheumatologist about biologics.
And I did... for which I received a stern lecture on trust in relations between doctor and patient.
diagnosed with AS April 2018, starting with cervical pain/stiffness; Aug 2018 enthesitis/bursitis left Achilles
diagnosed with AAU Nov 2017 (7 flares so far)
Sulfasalazine 3g 08.2018-05.2019 (worked for AAU & peripheral)
Supplements:C/D, omega 3/Probiotic/ Mediterranean NSD/curcumin
Predonisone in case of another AAU flare