Washing The Ankles (or Any Other Part) During Wudu
You can pour water in your hand and use it to rub the dry portion of your ankles and the method of pouring and spreading the water through rubbing is appropriate.
This following fatwa is what is making me really anxious. I don’t see how I can ensure that the water is flowing over the entire limb. Or am I misinterpreting it? https://www.islamweb.net/emainpage/PrintFatwa.php?lang=E&Id=326854