GI BILL increase?

Soooo if you haven’t heard https://news.va.gov/press-room/va-expands-access-to-gi-bill-benefits-for-veterans-who-served-multiple-periods-of-service/ this is a thing… essentially we can all get an additional twelve months of GI Bill time.

Let’s say I used 12 months of my GI Bill for my undergrad degree and I was awarded 50% (I served only a year on active duty).

Now let’s say I get active duty next year as my component and serve another 4 years on the O side… does that mean they’ll increase my benefit allowance to 100% for my remaining Gi bill time?

Alternatively if I commission guard but serve federal active duty time (say another year) will my benefit allowance increase to 100% for my remaining Gi bill time?

Third and final question… Since I wasn’t entitled to 100% of GIbill and therefore didn’t ever use benefits at the 100% rate, until after serving as a commissioned officer does this mean I’ll get another full 36 months (technically 48 months)??

TLDR: trying to figure out how I’m going to pay for autism school, how does the Gi bill work when you serve more time on active and are now entitled to 100% instead of 50% ( for example )