Excel 2016 power query - huge data

[BruskiAils]

I connected to our oracle DB with 40million+ rows of data tied to over 110k+product. These data refers to medical services and copay info. 1product consists of 350 services/rows. To narrow it down, I created a query to pull product created 365 days prior to current date. Loaded it to the data model connection only. I also created a list of unique prod ids from the result of the 365-day query loaded it to the data model and worksheet1. This list will be used for data validation dropdown.

End result idea is to pull the copay information for all 350 services tied to the product selected from the dropdown list.

Ex. When prod "GOAAP6" is selected, ColB is automatically populated with copayments for each of the services in ColA.
When GOAFI5 is selected, same thing.

So I created a REPORT worksheet,
Added the dropdown product id list (cell A1)
(CellA2...A351) listed all the 350 services in column A.
ColB2..B351 - Aitomatically populate copay info (im stuck herr)

How do I pull this data from the data model without loading the data to a table/worksheet??
I thought it would be as simple as vlookup but the problem is I cant load the results from the 365day query to a table bec of the number of rows (over 15million).

Im stuck. Any suggestions/help would be very much appreciated..

Thanks