Laravel createMany on createMany while preserving relation - laravel

Question

I have the same issue as this question asked. However, I would like to insert the data on the nested createMany with it's relation, and not insert multiple entries like:
id question_id answer
1 1 Good
2 1 Meh
3 2 Good
4 2 Meh
So if the question_id is 1 and the answer on that question is Good and for question_id 2, the answer on that question is Meh so that result should be:
id question_id answer
1 1 Good
2 2 Meh
Basically what I have is:
A User hasMany orders
An Order hasMany sub orders
A SubOrder hasMany sub order products
Here are the relations:
User Model:
class User extends Model
{
public function orders() {
return $this->hasMany(Order::class);
}
}
Order Model:
class Order extends Model
{
public function user() {
return $this->belongsTo(User::class);
}
public function subOrders() {
return $this->hasMany(SubOrder::class);
}
}
SubOrder Model:
class SubOrder extends Model
{
public function order() {
return $this->belongsTo(Order::class);
}
public function subOrderProducts() {
return $this->hasMany(SubOrderProducts::class);
}
}
SubOrderProducts Model:
class SubOrderProducts extends Model
{
public function subOrder() {
return $this->belongsTo(SubOrder::class);
}
}
Here are the tables:
orders table:
id name
sub_orders table:
id order_id date price
sub_order_products table:
id sub_orders_id product_id
Then on the store method:
$order = auth()->user()->orders()->create($request->validated());
$order_subs = $order->subOrders()->createMany($request->orders);
foreach ($order_subs as $order_sub) {
$order_sub->subOrderProducts()->createMany($request->orders);
}
The $request->orders data is:
{
"name": "My Order",
"orders": [
{
"date": "2022-05-17",
"product_id": [1],
"price": 1
},
{
"start_date": "2022-05-18",
"product_id": [2],
"price": 2
}
]
}
This means that the order has two sub orders, with their corresponding products. I end up getting:
orders table:
id name
1 Super Order
sub_orders table:
id order_id date price
1 1 2022-05-17 1
2 1 2022-05-18 2
sub_order_products table:
id sub_orders_id product_id
1 1 1
2 1 2
3 2 1
4 2 2
My desired output would be to preserve the relation on the sub_order_products table, save and match the correct IDs. That would be:
sub_order_products table:
id sub_orders_id product_id
1 1 1
2 2 2
I'm thinking to change request->orders data and have some IDs for the sub_orders_id or maybe nest the createMany methods but I can't figure out how to. How to achieve this? Thanks!