React, Axios and Rest API - filter ACF fields - wordpress

Question

I am trying to filter my axios request to only get the item if the yarn_stock is greater than 2.
I am currently getting the full list of yarns using /wp-json/wp/v2/yarn
The yarn in this case is a custom Taxonomy Term created under Products in Woocommerce that I created using the CPT plugin and
the yarn fields are Advanced Custom Fields
i can scope the acf fields for example to only get the acf field yarn_stock using this url:
mydomain.com/wp-json/wp/v2/yarn?_fields=acf.yarn_stock
which results in this json being returned:
{
"acf": {
"yarn_stock": 1
}
},
{
"acf": {
"yarn_stock": 0
}
},
{
"acf": {
"yarn_stock": 4
}
},
// etc
my axios request is as follows:
const { parent } = req?.query ?? {};
// create a query parameter e.g. api/get-products?perPage=2
const { perPage } = req?.query ?? {};
try {
const { data } = await api.get("yarn", {
parent: parent || 227,
per_page: perPage || 100,
// want to add a parameter here to filter the acf.yarn_stock > 2
});
the api results are:
[
{
"id": 263,
"count": 0,
"description": "",
"name": "Amber",
"slug": "amber",
"taxonomy": "yarn",
"parent": 251,
"meta": [],
"acf": {
"yarn_image": "",
"yarn_color": "#f7c26c",
"yarn_brand": "Debbie Bliss Rialto 4 Ply",
"yarn_price": 7,
"yarn_fiber": [],
"yarn_benefits": false,
"yarn_stock": 1
}
},
{
"id": 252,
"count": 0,
"description": "",
"name": "Brick Red",
"slug": "brick-red",
"taxonomy": "yarn",
"parent": 227,
"meta": [],
"acf": {
"yarn_image": "",
"yarn_color": "#711d2a",
"yarn_brand": "Rico Essentials Merino DK",
"yarn_price": 6.5,
"yarn_fiber": [254],
"yarn_benefits": [300, 299, 305, 303],
"yarn_stock": 4
}
}
]
i would like to add another parameter to my axios request to only pull items that have yarn_stock greater than 2
would be grateful for any ideas, tearing my hair out!
i tried adding a filter to wordpress functions.php as a solution i saw on stackoverflow which was to add a filter at that side but it doesnt work for me.
i read ACF documentation but cant make sense of it for my situation
my expected result is to have all of the data returned for items that have a yarn_stock greater than 2. for example i should see all fields for Brick Red yarn as it has a yarn stock of more than 2 and i should not be shown the Amber yarn with a yarn_stock of less than 2