okay do the thing i m telling you rest ur foot on plank give passive stretch to ur little finger passively. after that put big towel should be soft and thick one then wid the help of ur all foot fingers try to grab or hold the towel and concentrate more over little finger do 3times a day and follow same movement inside hot water for 15 min water should be hot that u have to do once in a day.then let me know the result good luck