It is imperative that an Inheritance Claim is brought within 6 months of the date of the grant of Probate or Letters of Administration.
At the expiration of that 6 month period, any claim will be limited to the assets and value that remains within the estate, which may be NIL.
The time limit may be extended by the Supreme Court but early action is the best way to ensure protection.
Written notice of your intention to make a claim against a deceased estate must be drafted with great care and skill, preferably by a solicitor. You may inadvertently reduce the time limit within which the executor may distribute the estate without recourse.