I've posted several times about this before, but I found that if I inserted my sensors and left them for 48 hours rather than the usual rather shorter wait time before activating them, then lying on my sensor arm didn't cause these lows, which only ever occurred during the first couple of nights/days.
Normal activation time:
View attachment 48105 48 hour delay:
View attachment 48106
But my sensors tended to read consistently around 1-1.5mmol lower than my usual finger prick tests anyway, some of which were done using my Libre reader and test strips rather than my usual Contour Next meter for the sake of compatibility.
@Jaylee I've never used anything other than my Libre reader so haven't done any proper(??) calibrations.