How to move 4000+ custom posts in a new custom table? Please help

Hey Support, 

I am using Metabox with Metabox AIO on a website built using WP Astra Theme + Elementor Pro plugin.

The website has 4000+ custom posts which was first built using PODs( https://wordpress.org/plugins/pods/ ) but then I migrated to Metabox 4-5 months ago. 

All seems good but I am lately getting high CPU and High Memory usage multiple times. So, I think it might be happening due to a huge WP_Post_meta table. 



So, I am planning to use MB Custom Table plugin ( https://docs.metabox.io/extensions/mb-custom-table/ ) to separate custom fields to a different table than default WordPress meta table. 

However, being non-tech user, the process seems very tough considering I will have to first move all my existing custom fields to a new custom table and then delete old data.

I read this guide - https://metabox.io/move-custom-fields-data-to-custom-tables/ and also watched video multiple times. But few things are not clear. So, please help me with this.

To get better help, I am sharing these data for consideration:

Example Website URL: customwp.com
Custom Post Type name: Tool
Custom Taxonomies Name: Platform
Two Custom Field Groups - 1. For Platform and 2. For Tools Each of these field groups have dozens of custom fields.

For example, ‘For Tools’ group have custom fields like ‘Tool Summary’ , ‘Tool Link’ etc. and ‘For Platform’ group have custom fields like ‘Platform Excerpt’ and ‘Platform Link’ etc.

As I said I am using WP Astra theme with a Child theme name ‘Roka’

In this guide - https://metabox.io/move-custom-fields-data-to-custom-tables/ I have doubts primarily in STEP-2 and beyond.

The function code starts with

function estar_child_data_company() {

So, what will be the code in my case? Will it be

function WP_Astra_child_data_company() {

Or

function Roka_child_data_company() {

Do I need to write Parent Theme Name or Child Theme Name and how? Should I write WP_Astra or WP Astra while writing the theme name, if it’s parent theme?

The given code at https://metabox.io/move-custom-fields-data-to-custom-tables/ only provides the example for post_type ( companies ) but not for Taxonomies. What code should I write for custom taxonomies data?

Please understand that I am no coder and have no experience of understanding these things. So, I need to follow exactly what steps I am being asked to follow. 

So, can you please look at my example ( with custom post type, custom taxonomies and custom fields name ) that I have used above and give me exact code that I should run under functions.php? I am repeating my example once again -

Example Website URL: customwp.com
Custom Post Type name: Tool
Custom Taxonomies Name: Platform
Two Custom Field Groups - 1. For Platform and 2. For Tools Each of these field groups have dozens of custom fields.
For example, ‘For Tools’ group have custom fields like ‘Tool Summary’ , ‘Tool Link’ etc. and ‘For Platform’ group have custom fields like ‘Platform Excerpt’ and ‘Platform Link’ etc.

I am using WP Astra theme with a Child theme name ‘Roka’

Also, as I said I have 4000+ custom posts which I need to move. So, how do I need to run this code again and again? Please help me understand the process better.

Thank you.