Parkinson's (diziness, urinary issues)

My father (70 yrs) has Parkinson's disease, Diabetes and Urinary issues. He is sitting/ sleeping the whole day. Whenever he gets up to do some walking or just stand, he feels dizzy (chakkar aana) and falls down. This is happening more frequently nowadays. He used to walk around 400 meters till last year, but now he trembles and his legs bend even if he walks just 100 meters. When he goes to urinate, he stops in between and is not able to move his legs. After sometime he is able to move. Sometimes, he is unable to hold urine that much time and urinates in his pants. Sometimes, he is not able to get up from bed and, urinates on bed itself. 2 weeks back, his blood sugar was 230 before breakfast. I am from Udupi, Karnataka. He is taking some ayurvedic medicines and following allopathic meds: Syndopa CR (1 morning - 1 evening) Amantrel (1 morning - 1 evening) D-Bose 275 MP - (1 before lunch - 1 before dinner) What should we do for his dizziness spells & urinary control issues?