I don’t normally do this, but here’s a starting point. Since we can’t post .cpr files, PM me with your email address and I’ll send the .cpr file I started for you.
Here’s the basics:
I turned off Musical Mode (so the MIDI file doesn’t follow tempo changes), then started moving the Warp tabs (go about every two-four measures and set it to the next downbeat). I did the first 10 measures to get you started. After you complete the Warp Tabs through the song, quantize as necessary, add notes if needed, then save. Save it with a new name (so you keep your original tab work in case you have trouble), then change to Musical Mode, then set a constant tempo (if you want, if you don’t, just leave it and enjoy).
I hope this helps.