That's great - from here we might actually suggest you clear the LEAP optimization data if and only if you made large, significant changes to how the site is setup / operates.
That could help to sort of restart the optimizations to the new conditions - and in that instance, we'd also encourage you to work through the setup wizard and try and turn on as many of the optimizations that work with your site to ensure the most help is being provided.
With LEAP, and any site speed tool, there's often not going to be an instant fix - a lot of the optimizations can take time to build up, and we'd want to look at the 'field' data reported in LEAP over a longer period of time (a week to two weeks in this case most likely). A PSI test with Google isn't necessarily indicative of real-user experience on the site - as it's a one time test of a page using a simulated connection often slower than real-users.
It's also a good idea to have this in the back of your mind when worrying about CWV metrics --- they account for around 2% of all ranking factors - so while there's definitely benefit to having good scores, it's more about the ramifications of good scores rather than the actual scores themselves. Meaning, if you had 'okay' CWV metrics, but the user experience metrics are showing high engagement and there's no real issue navigating around the site, that is better than having all 'great' scores but seeing a site that's not as dynamic / engaging for a visitor.