Hello mate,
I dont quite understand how you have had only had 14 PNF sectors and not one PF sector in 6 months? Have you just done a TR and not got a job, but been in the SIM?
If this is the case, its like anything in life, the more you do it the better you get at it, and if you are not current you cant help but be rusty.
One thing you must realise is the skill of flying jets is something that takes a number of years. The TR is just the tip of the iceberg. Meeting the requirements of an LPC is a small portion of what airline flying is all about.
Dont beat yourself up about being rusty. I have been in the sim with guys who have very little experience, and its a steep learning curve and you can see the brain caving in, however, that is normal.
I wouldnt worry too much about it.