Wordpress optimization. Or how to leave only what you need in the head?

Question

css

The site on Wordpress + Elementor, everything was fine until the customer's Wishlist went.
Initially, having made the main one, I brought the speed to 90 Mobile, 92 PC. But then everything went wrong and you need to do a very thorough cleaning of scripts and styles, but I don’t know how to remove or add them to the head, footer in a normal way, and not through php.

Prompt the most simple and convenient tool for such work. Because there are a lot of styles, content rendering takes 6 seconds, it's tough.

Answer 1

Your problem is not in clearing the head, but in the elementor. It is worth throwing out the elementor and turning it into your own VP theme.
Explain this to the customer. And what you are doing is saving on matches. You spend 80% of the time, you get 20% of the result. How much is 20% of 90? It's good if you get 91. It's worth it?
All that is advised with caches is advice to take ibuprofen when the leg is torn off and take ibuprofen again, etc.
There is simply nothing to eat - do you keep such customers? Get down to business and before production, change what you put in the elementor in your WP theme. Because the elementor is for prototyping. those. when the customer does not know what design and what blocks he needs.
Diz tired? Then do optimization: transferring everything to your WP theme. You can not? Learn or outsource/refuse.
As you argue, it's wrong. Lack of experience affects - because. you do not understand the consequences of further technical support of the site - by disabling js / css you are planting a time bomb for your client. Then it will affect your reputation.

Answer 2

For optimization I use plugins:
Fastest Cache + Fastest Cache Premium + Autoptimize. By properly configuring these plugins, you can achieve results up to 100 PageSpeed ​​points. Another question - is it necessary?
In general, the use of visas. editors slightly complicates the optimization of the site, but nevertheless it is possible. Well, in general, pay attention to the size and weight of the photo, the hosting, the plugins used, and much more. It is advisable to use fewer external scripts or load them asynchronously