Rheumatoid if correctly diagnosed has a continuous treatment.Get ESR
,CRP ANTI_CCP serum tests for exact nature of disease.If it shows normal values , no medication needs be done. If diagnosis is confirmed on these tests, then medication may be needed, yes, there are remissions and exacerbation off and on and , symptom free period doesn't mean disease free. Yes depending on medication selected by your doctor , sometimes if only NSAIDS been given, they can be stopped if pain ,swelling free, but if DMARD treatment been begun , then some maintenance dose is prescribed even in remission period. It all depends on severity of disease and on DAS score.