yeah drop d is super easy once you get the hang of it - just tune your low E string down a whole step to D. i usually just match it to the 4th string (D string) but an octave lower, you can hear when it locks in.
one thing i noticed about string tension tho is it really depends on what gauge strings you're running. i switched from 12s to 11s on my dreadnought a while back and it made a huge difference for bending and general playability. felt like a completely different guitar honestly. 10s might even work if you have a lighter touch but i find they sound a bit thin on an acoustic.
also worth mentioning that some guys tune down a half step or a whole step (like Eb or D standard) which loosens everything up quite a bit. lots of older folk and blues players did that. makes bending way easier without changing strings.