Difficulty in walking. Though no use!

We have recently discovered that my uncle of age 66 has symptoms of parkinson's from last 3 years like difficulty in walking not even single step he can walk difficulty in balance slowness in speech and bends while walking we approached doctor of reputed hospital named kuppaswamy naida multi specialty hospital and he dint even said what's wrong with uncle and i told him all symptoms and then he prescribed syndopa 110 mg and levodopa 100 mg which uncle took but it's been 10 days now from day 1 his health has worsen even more now he can't even wake up from bed now previously as uncle was sugar and bp patient he took medication and that medication controlled his sugar and bp also he took all blood test where everything was normal he changed entire prescription for bp sugar and uncle health worsen even more. i don't know what to do now some doctors just don't listen and instead of treating the diseases they make it even worse we went to top neurologist in top hospital even though no use