Can you open a Librium capsule to taper the last 5 mg if you have been on it a long time?

The Full Prescribing Information for Chlordiazepoxide/Librium does not mention it.
It is normal to taper the dose of benzodiazepines when going off them.

"it is advisable that they consult with their physician before either increasing the dose or abruptly discontinuing this drug."