Three steps to making a will
Speak to your GP to confirm you have mental capacity to make (or change) your will. Even if you feel you do, it will prevent problems in future if you have an official assessment from a medical professional.
Have a think about what you own and who you’d like those things to go to. Also think about who you’d like the executors of the will to be – they’re the people you’d like to handle the details of your estate after you’ve died.
Unless your affairs are very straightforward, it’s best to find a solicitor to help you make a will. Ask a trusted loved one for help finding a solicitor you feel comfortable dealing with. Find out how much they charge and check they’re licensed with a professional body, such as the Solicitors Regulation Authority, before engaging them.
Useful links for making a Will:
https://www.nhs.uk/conditions/dementia/care-and-support/legal-issues/#:~:text=Make%20a%20will,-It's%20a%20good&text=A%20person%20with%20dementia%20can,who%20specialises%20in%20writing%20wills.
https://www.ageuk.org.uk/information-advice/money-legal/legal-issues/making-a-will/