Yes, I have finally, after several minutes, decided to post the new pictures of my sprout.
I had to take them first.
You can see the small cotyledon, embryonic leaves, at the base of the plant, slightly round.
The top leaves are still small and not displaying the characteristic double leaf you are probably looking for and familiar with.
Next time I will post some pictures of seeds. Unlike the plants, the seeds don't look any differet than any other citrus.