Recent Additions not in Library after moving back from Apple Music to iTunes

After years of using iTunes, I tried switching to Apple Music about a month ago. It just wasn't for me, so I have reverted to iTunes. I didn't have a subscription, I just used AM for listening to my music library (all files stored locally on my PC). During my time using Apple Music, I added some music to my library (CD rips and MP3s, not Apple purchases). Now that I've reverted to iTunes, my library is at the same point it was when I first made the switch (ie the last month of additions are not there). Is there any way I can add the additions I made while using Apple Music, or will I need to just manually identify and add these all over again?

I am using ITunes 12.13.7.1 on Windows 10 if that helps