Just want to add some support to previous points.
Look at getting some support. We had a carer who came in for an hour or so every weekday. Enabled me to get out for a bit, go fora run, do shopping or meet friends. My wife (PD diagnosed 5 years ago) improved following a meds tweak five weeks ago so we reduced the carers hours. Now suffering a relapse so we will increase them again as even just ten days of 24/7 PD is stressful!
We try to get away for a couple of days every 3 months. Always the same place which is a bit dull in some respects but it avoids the anxiety of a new place every time and is a change of scene.
Try the Parkinsons UK helpline. I’ve vented at them a few times when it has all got a bit much for me. Feel like I might call them agains actually as this relapse is full on. They don’t necessarily always provide answers but they get it!
if you can, try to get some counselling (if you can get away for an hour). I’ve done this too and found it really helpful to talk through my frustrations and guilt.
The next one is hard. There will be times when it might be a bit easier. Try to enjoy those times if you can. I’ve found this hard because I struggled to lose my awareness of the fact that the good times are temporary and there is a some bad sh1t waiting for us around the corner. But if you can just ‘be in the moment’, it will help.