Website Speed Optimization

Hi, I need someone who can speed up a clients website. It is taking a long time to load pages. I need this done without anything changed on the design! The website is www.jetweels.com if you would like to check it out and let me know what you can do for it and how you can speed it up. I have attached the desktop/mobile speed insights.

The website is already launched so it is crucial that the design or layout is not changed! Let me know if you have any questions.

Thank you,
Allison