My DLC Bill feels insane for a 1BR apartment

I live in a tiny 1BR apartment. I am out of it over 40 hours a week for work. Factor in time with nothing on due, except electric heat, due to sleep as well. When I am home, it's pretty much just a TV and maybe a small led desk lamp cuz I hate lights when home. I live alone and I eat out more rather than cooking.

My most recent bill? $300.
To compare, during non-winter months, it doesn't even reach $70 a month.

I know elec heat is the main factor. But I feel even that would not cause such a big bump. I am a big hoodie person. So my apartment doesn't even get set to a high temp because I am more comfortable going around in a hoodie at home and always have warm sweats on.

Edit: when I'm home I keep the temperature at 55. It's set at 50 when I am at work