Looking at the docs Populating for Query Engine API - Strapi Developer Docs
It seems like you should be able to do
let result = await strapi.entityService.findMany('api::article.article', {
populate: {
comment_id: {
select: [
"id",
"comment",
"status"
],
where: {
status: {
$eq: eduStatus.ACTIVE
}
}
}
},
});