If you’ve got a pump, look into how @IlluminatedExtractor’s are cooling and heating their systems…
(Presumably you’ve noticed you can achieve 0C just by evaporating solvent at atmospheric)
You can absolutely get (some of) your solvent down to -40 by using a recovery pump to move (some of) it into another tank.
You’ll also generate heat. Which you will need to dump (or use productively) to make this work.
I’ve only ever used this trick to cool down my extraction columns (and generate pressure to move solvent around), so I don’t have data on what percent of your solvent you’d need to recover to achieve a 60C temp drop, but if you poke around on engineeringtoolbox.com you might be able to math your way there.
Were it my problem, I’d look at how much “heat” I’d need to pull to drop 10kg of solvent by 60C, then calculate how much solvent I’d need to evaporate to achieve that number.
Or just try it and see…