We are proud people. We don';t like to ask for help when we think we can manage it all on our own even when life falls apart. Even when people ask "how can I help?" either we don't know how they can help or we are ashamed to accept help.
But look at a lion's pride. There is the leader of the pack and then the pride. And only with every member is the pride strong. They support and protect each other within their hierarchy.
And so it is with you being a caregiver. You are the leader of the pack and in order to stay strong and survive you need to trade your pride for the pride of support. And that's ok. You have permission without guilt or shame.
Believe it or not, people want to help. Allowing them to do so brings joy for them and relief for you. As the article states, you need space to think. Space to clear your mind before taking on the next challenge.