Please read this: To those who feel lonely/homesick/friendless/think they chose the wrong school, etc...
And this: Having Trouble Adjusting to College/Making friends? Top 10 things to do (Covid Update, Fall '20)
Make an appointment with the campus counseling center first thing in the morning. You are going to be okay. This time is hard for a lot of people, but there is a light at the end of the tunnel. I urge you to stop focusing on “I have to be here for three more months.” Instead just focus on getting through this day.
The TLDR of the above posts are: this is a time of life you have to get through, regardless of COVID or not, and that there are ways to make positive changes that will help you cope.
Hugs and hang in there.