Hi @Shaun-IGS,
Unfortunately not, no, this is not possible.
A recurring request from users is to be able to sort the deals in the sidebar: https://community.hubspot.com/t5/HubSpot-Ideas/Order-of-associations-within-record/idi-p/448299
If that would solve your query, too, you could upvote and comment. If not, you could submit a new request to the HubSpot Ideas section: https://community.hubspot.com/t5/HubSpot-Ideas/idb-p/HubSpot_Ideas
The product team reviews these requests based on their popularity.
Best regards!