Im trying to think of a way of having someone authorise your early unlock.
For example if you have a joint account you could ask your partner to authorise the early unlock. You’d have to discuss the reason you created the pot and why you wanted it unlocking. They could determine if it really is important.
It follows on from what @Chapuys said above because I did similar when saving for my house deposit. Then for an additional layer I gave my withdrawal book to my parents on the condition they only gave it me if it was really important.
Kinda like on Facebook where you can nominate close friends to give you access back to your account if you’re locked out.
Edit: How about when you lock a pot you’re given an early unlock code. You can then give that to someone to look after with condtions 