You can request the CAIPS notes, but you still need to get his signature on the form to allow release of the information.
I don't have the form handy (nor the link), but you can search the previous posts, by doing a search on CAIPS, and you will find a link for the release of auth form, as well as the request form under the Privacy Act, to release the notes, mailing address etc...
Also search on Boncuk's previous posts, she did a brilliant explanation of the CAIPS, and how to obtain them etc...
suggestion to you, to get him to sign the form. I sent it to my husband electronically, he signed it, scanned it and sent it back, and I printed it..... [was done within a few hours....beats using any form of snail mail.]
good luck