A reminder Power of Attorney is arguably more important than a will, and more urgent.
Just had a call on @thismorning from an older lady asking about moving bills into her name from her husbands, who she's caring for as he has early stage dementia.
Yet she hadn't yet done Power of Attorney. This is by far the more urgent consideration. Get it done while someone has the capacity to sign it. Then if and when they lose their faculties, the transition so you can look after their finances (and health and welfare) for them is relatively easy.
If not, leave it too late, and the money may be locked away unless you got to the Court of Protection which is often and expensive and time consuming nightmare.
Better still get a PoA when young. I did mine before I was 40. It is in place, so that if I lose my faculties in the future at that point (not before) someone can take over.