I have two Christmas Cactus that apparently are elongating. I have them planted with Bunny Ear Cacti, Spiny Pincushion, and Little Candles, they all seem to be fine.

I have this light that I run for 12 hrs a day and have had it since the 22nd of June.
HOOMEDA-Brightness-Succulent-Adjustable-Gooseneck

Here are beginning pictures and how I have them planted and also one of the elongated peanut Cacti




















Is there anything I can do to save or help my peanut cacti?

More light. Can you move the light closer to the plants maybe? We have a thread dedicated to artificial light, and you might find some useful ideas there.

The thread "Artificial light for cacti and other succulents" in Cactus and Succulents forum