Thanks for the update. I'm sure you must be somewhat disappointed that the results are minimal so far with the Dupixent, but you might as well continue for the full 3 months. Please do give us another update at that point.

Also interesting to me was your observation about the cilantro smoothies. I have never tried them, but I bought a bundle of it recently and wanted to see what it tasted like, so I put a tiny bit in a salad. YUCK, that stuff is terrible!
Of course, the smoothie devotees throw lots of taste-disguising ingredients into their smoothies to avoid tasting it as much as possible, but I really have to give them credit for subjecting themselves to this cilantro in its fresh state. Of course if it works well for them, I'm sure it is worth it!

As far as your attempts to control your itching, I recommend a cream from a company called CeraVe. I use their Itch Relief Moisturizing Cream, but they have other formulations as well. Some people on this forum have also used Sarna, but I found the smell of that stuff to be unbearable, whereas the CeraVe has almost no smell at all and works pretty well. Also, if you can take it, put an ice pack on the itching area and your skin will become numb and stop the itching at least temporarily.

Good luck!