They DO have your medical.
It was sent from PP to the embassy, and you carried it to your POE in the sealed visa envelope and handed it in to them.
It was then transferred from DHS to USCIS for storage in your Afile.
Submitting a photocopy of the DS3025 Vaccination Record is only a recommendation here.
Why do we say that?
Because most adjudicators are NOT used to K1 AOSers and are expecting I693s included in the AOS packet as they are required from EVERYONE ELSE BUT K1s.
When they see a photocopy of the DS3025 in the K1 AoS packet, it reminds them to go look for your Afile to retrieve your medical package.
So the answer is a FIRM no.
Unless you are requested for a new medical, do not get one.
You'll just have to hope your adjudicator has more than half a brain and knows about K1s and the medical exception.