Is emotional numbness sign of depression?

I noticed some change in my life where i significantly sleep alot than i used to be. I frequently see the number 10 on my clock when I wake up which is weird because I could sleep a lot less before.

Second thing is that I feel alot more emotionless than I used to be, like I am searching to find all those things that kept me alive. Can't feel a thing even watching sad things on TV or video games.

I can function normally, I do laugh or cry but It feels more like a "surface" not the deep things I could reach through.