I believe I could have this. When I have experienced something for the first time I can feel it more strongly, but become more resistant to it with prolonged exposure and becoming more aware of it.

Let's say you touch icy water for the first time, you flinch but gradually stop doing it with prolonged exposure to that same water.

I would like to know if this can interfere with spirit/entity communication or anything. If I can do something about it or should.

You could also be experiencing what I call "leveling up", which is where you've reached a point in which you've grown enough to be ready for your energies and abilities to expand beyond what they were capable of. This is usually a time to rest and reflect on what you've done, and take time to let the energies settle and "upgrade". It can take anywhere from a week to three months, or even longer.