Clearing before results day with firm offer already?

I have just got my final grades from my Access to He diploma and have come out with 144 ucas points which is way higher than I expected. I already have a firm offer elsewhere for an early years degree, but I have just seen that primary education has been put on clearing at a different uni that is closer to me and is my dream degree- but I did not apply for it before as I wasn’t sure I would get the grades but I have come out with 144 ucas points and primary ed requires 120 at this uni. How do I go about getting a clearing offer at the other uni for primary ed before being released from my firm uni?