Hello
I can help you to update your Apache config. I have over 20 years of extensive experience with Apache and its modules and have completed many projects with issues similar to yours, over many years.
I have recently completed a similar project with the same objectives.
If you would like to send through some additional information on your current setup, including if you have access to your main Apache/Vhost conf files and what version of Apache you are running, we can confirm and I can complete the project for you.
I can also clean up and optimise the code where required to ensure your site runs as a high performance server, with specific custom developed directives that can speed up your site performance up to 30% faster on some requests.
Thank you
Darren