How much should a pen be used to keep it in good shape?

Hello everyone,

I've got a pen I only use to write in a journal dedicated to my mother who passed away. When I wish I could still talk to her I get that journal and write whatever discussion I'd like to have with her. I have a Pilot Cavalier that is only used for this.

I'm worried the irregular use might damage the pen. Sometimes I write everyday, but not everyday I have ideas of what to say so sometimes I go a couple of days, even weeks without writing much if at all.

Can it be bad for the pen and what is the proper maintenance I should do on such a pen with such irregular usage?

I'm starting thinking about using it more for other occasions and let it loose its "sacred" aspect, but I'm not sure yet.