How can I transfer Adobe Stock licenses to a client for future use?

I have an Adobe Stock monthly subscription that includes 10 paid downloads per month (Standard licenses).

I recently designed and typeset a book for a client. The book is not for commercial sale. I downloaded around 20 images from Adobe Stock for use in the book. Some of the images are from the Free Collection, but most of them are paid Standard assets.

Now the client would like to obtain the rights to use the same collection of images in the future, for example on their website, social media, and other communications/marketing materials.

In other words, they would like to pay me for the time and cost involved in finding and licensing these images, and then continue using the images themselves.

I understand that Adobe's terms allow a Stock asset to be licensed on behalf of a client, but I am not completely sure how this works in practice when the images have already been licensed through my own subscription.

Has anyone had a similar situation?

What would be the correct way to handle this? Can I transfer the licenses for these already-licensed images to the client, and if so, what exactly do I need to provide or do to make the transfer valid?

Also, can I charge the client for the work involved in finding, licensing, documenting and transferring these images, or would that be considered reselling Adobe Stock licenses?

Any practical advice or experience would be greatly appreciated.