When will Generative AI credits be available as an add-on pack?

I currently subscribe to your photography plan, and have run out of my 250 credits for the month as I have been experimenting to improve my skills with the technology - but I do not want to pay 5x my monthly subscription for apps that I will not be using just to boost my gen AI credits.

Will you be introducing add on packs of the generative AI credits to allow for peoples fluctuating business requirements?

I'm sure something a bit more flexible in that area would be a worthwhile additional income stream for Adobe.