This is very strange as you have been shopping with this SA since early 2023. I'm guessing that you and your SA have a great relationship and click well before deciding to purchase $45,000 in 6 months. Assuming that everything has been done "correctly" regarding your shopping and wishlist bag request. I could only really see it being 2 things, either not senior/long-term enough, or you're asking for a spec that is very hard to come by. I suppose there could be a "long" line of clients who are asking for the same bag as you are, but your spend/relationship should definitely bump you up that imaginary list in your SA's head, making you one of his/her higher priority clients.
Can I ask what bag/spec are you asking for, if you don't mind sharing?
Personally, I would just lightly ask about your wishlist bag. Perhaps something along the lines of, "Any luck with my wishlist recently?".