So I've decided to join the general lucid dreaming class

I've been wanting to do some WBTBs but haven't been able to recently, I will be soon though

Other than trying to WILD and DILD during a wbtb, I'd also like to do dream incubation.

I was wondering, i'm using a mantra for DILD and i'm also using a mantra for DEILD, so I can get into the habit of not moving once I wake up. So is it okay to use two mantras for separate purposes or will they cancel each other out?