Support group in Dublin - this group may be able to assist you https://www.parkinsons.ie/

Sorry that your father has to endure falling. The good news for people with PD is that with exercise and physical therapy it is possible to cope better with freezing, turn and walk more normally and improve balance. Through practice and sessions, a physical therapist can help people with PD avoid tripping by helping them learn to take larger steps. Additionally, joining an exercise class tailored to people with PD can help. If you take levodopa, be sure to exercise while it is working — the drug helps your body learn and remember motor skills.
read more -- https://www.parkinson.org/blog/research/Walking...

Julie: Although my PD came on much later in life my symptoms are almost identical to those experienced by much younger people with PD. I began falling about five years ago and finally wound up in the hospital. After a relatively brief stay and some strong words from the "fall" doctor I returned home with a walker that I use whenever I'm on my feet. I spent one year alone before my oldest son moved in. He's been here over two years and I didn't fall again until last Saturday morning when I reached for my walker without first putting on my glasses, missed the grab bar and fell forward. Strangely, my injuries are limited to two broken toes. My recommendation is that your father use a walker whenever he's on his feet and to avoid situations that may lead to a fall, such as shopping, dining out, etc. This may require adapting to new interests such as extensive reading. I've found exercise too demanding and some of it downright dangerous. Instead, I walk on the porch, back and forth, hoping to see some birds. Hope this helps.

I’ve had PD 7 years and about three years ago I started collapsing. My legs will just go and I hit the floor. I’m 50 and I have broken my leg twice and now my ankle. About two months ago had an episode broke the ankle and leg now I have 7 screws and a plate. My doc said its the autonomous part of the brain and I’m being sent to a specialist next week. So yeah I know how you feel. Talk to the doctor about it

Julie have his Dr look at him. It could be something e!se in combination with the pd