i want to ask about mongodb document design

I have document with structure like this

{
_id:123,
data:[
   [
      { name: "andy" }, ....
   ],
   [
      { price : 1000 }, ....
   ],
   .....
]}

i put 1 transaction into 1 document, so easy to manage data. But i have an issue when there are many data inside array, when it exceed 16mb..

I dont want to change or split the data into many document, because my application already depends on its index in data array, if i do, its painfull in application side..

Since i'm using aggregation (pagination , project), there are no performance issue when it comes to data retrieving.

I know split data into new document can solve this problem, i just only add a field reference into new document.

But if i dont want to split the document, is it posibble?