hello Granaghan, Ronnie from scotland, have been playing for about 20 years now, (58years old so started late) and like you my hands are quite small and dumpy so have barre problems also, if I may suggest try going back to very basics of holding guitar etc it may be you require to train your thoughts to positioning, and try stretch exercises, it won't come quick but stick with it about 15mins a day go slow and go easy, hope this helps best of luck
Ronnie