Hold up.
Let's not give Holt too much credit here.
The Orioles signed Harvey on the 17th of February.
This article, showing that Harvey had already been working at the Baseball Performance Center, came out on the 11th.
https://pressofatlanticcity.com/sports/high-school/former-mets-star-matt-harvey-trying-to-get-career-back-on-track-at-bpc-must/article_4d53d08a-6be1-5d02-b43d-bc58980264d1.html