Do we need to change Land Registry info?

wishtobedebtfree

My DH’s mum has passed away earlier in the year. He is an executor of her will (along with her husband), which states that the property is to be held on trust and her husband can remain living there until either he dies, remarries etc. Her half share is then to be divided equally between DH and his sibling. 

Do we need to do anything to protect their interest (DH and sibling), register a restriction or a caution etc. How do we prevent him from say, equity releasing the lot and giving it away to his children 🤔

Having researched it on the internet with some probate solicitors’ online articles, it says the house should be transferred into the name of the remaining spouse and a trustee (the only other executor than my husband being the remaining spouse), so do we need to transfer the house to my husband’s name and remaining spouse? 

If so, do I need a solicitor to do it, or can we complete the appropriate Land Registry forms ourselves?