Thoughts on potential diagnosis?

Hi, I had a phone consultation with GP last week and he thinks I have CT. Next step is to see a physio for consideration of steroid shots. But I'm not sure my symptoms fully fit CT - wonder if there's anything else that should be considered? My concern is that it'll just be assumed that it's CT now, and I won't get to see anyone who specialises in hands. Questionnaire results 42% likelihood. -45yo, female -do probably overuse my hands eg typing, gardening, texting -3 month history of the below (note: onset roughly coincided with starting Wegovy weight loss injections, BMI currently 30) - initial stiffness and pain in both hands - worse on right - mostly in the morning - this is worsening and have developed tingling and numbness in thumb and at least 4 fingertips, lasts throughout the day - difficulty with fine motor movements - reduced grip strength, difficulty opening jars - unable to form a tight fist, whole hand feels stiff, can't wring out a cloth well -unable to fully straighten hand (is mostly straight but not how it used to be) or elevate fingers at all (results in pain and extreme stiffness where fingers meet hands) - enormous difficulty in writing -'shaking out' doesn't help at all - have been using splints at night - no benefit - have been taking B12 supplements - no benefit - pain is mostly on movement. When not moving hands, more likely to be tingling or numb. - some finger swelling in mornings, no redness, no joint tenderness. I would really value any opinions, thank you !