Same for me. There's a bit of back and forth in regard to selecting the correct Dioptrx. Some say to go the next higher diopter measurement for a Dioptrx in relation to the cylinder measured by your eye doctor. In the end, I observed with my most used low power eyepiece with my glasses on and stars were pin points. So I selected the cylinder that the eye glasses provided. Worked very well and much better than I expected.
I think that depends a lot on the differential between your daylight pupil and your nighttime pupil.
For me, the difference is small--2 to 4mm, so my glasses prescription does a great job correcting at the eyepiece.
But if your pupil swings from, say, 2.5mm to 6.5mm at night, the extra astigmatism from the larger pupil may require a stronger correction at night.
I asked my optometrist about that earlier this week, and he said that it's not just the diopter of astigmatism that changes, but also the angle.
Which augurs well for the rotatable nature of the DioptRx and, perhaps, a *slightly* stronger correction.
Sol is right, though--experiment with your glasses first.