Dose - Getting the most effect from 10mg Diazepam?

[MaquarieRevisonGuides]

Hello all, I've come across 3 5mg diazepam pills. I tried shelving one today after i did some research and concluded that to get the most out of this limited amount I would administer rectally, I'd read that one 5mg pill would be equivalent to around 15mgs oral. Unfortunately the pill did next to nothing, can anyone tell me how to make the most of the remaining pills so I can experience the strongest diazepam sensations with only 10mgs? I'm worried about wasting my remaining two pills which are hard to come by. I plan to be smoking some weed at the time to boost the experience also.

Sorry if this has been covered, I did UTFSE, as well as other internet sources but cant seem to figure out how to get the most out of it, duration isnt an issue.