Trigger thumb: What helps?

It may seem fairly unimportant, considering the major joint issues here, but I got punished for extreme (weather/timing) related repetitive motion - weed pulling, pruning - by suddenly having a trigger thumb. It is very irritating, mildly painful, and definitely limiting in what I allow myself to do. It is hard to impossible to resist using the thumb as usual - 73+ years of no problems can’t overcome innate moves. PT person I saw for back issues told me to lay off, and maybe it will resolve itself in a week or 2. Stiffness, clicking, and pain easing up some after 5 days, but not much. Any quick-fix suggestions so I can get back to normal hand use? I usually do not take anti-inflammatories as a matter of course. Or pretty much any OTC meds, period, so I have not tried that route. May try Voltaren topical treatment…. .