1. Dear *****, what you should do here is to get a solicitor to attend at your brother in hospital and get the solicitor to draft a will for him. There is no such thing as a will form. Nor is there any such thing as an attorney's letter. Instead, you need to get the solicitor to attend and get the will signed and witnessed in hospital. The solicitor can take your brother's instructions and immediately draft a will and get it signed and witnessed there in hospital. That is how to handle this situation, as otherwise your brother might die without making a will.
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