When I precept, I always "make" the orientee watch me the 1st clinical day. (with assessment, asking questions, educating pts, give meds, etc etc etc)
On subsequent days, I am attached to their hip. I watch them start iv's, give meds, chart, perform assessments, use equipment, etc. (not to mention if the pts have any questions that the orientee cannot answer). Once I've "checked you off" on giving sq/im/iv shots, injections, perform tasks, etc). I give you space because I don't want the orientee to feel like he/she is back in nursing school.
Our hospital's outlook on precepting is: let the orientee and the preceptor take care of all the patients together (not you get 2, I get 2). For example: we do all of the work together, then you do 65% to my 35% (together), then 75% to 25%, etc unless the preceptor feels the orientee is beginning to "sink".
I work nights, so I do have extra time to make sure the orientee understands things that are pertinent to our floor (what specific cardiac meds actions are, the purpose of the medication, CP protocols, iv titration gtt protocols, interpreting telemetry, etc.)
As far as suggestions: I would speak to your preceptor first. Because if you go to your NM without having said anything to your preceptor, your NM will probably revert you back to him/her first. I'm sorry you having to deal with this. I know it is hard enough trying to "fit in" to your new role and floor without having any additional stress.
GL and keep your head up!