I'm using the MacBook Air (13-inch, 2017) model. I recently also updated to macOS Catalina. However, I have been facing this issue even before the update.
My laptop keeps to uncomfortably hot temperatures on the top-right around the power button and the thunderbolt port. I've been using the laptop for a year and this is the first time I have faced this issue (it is happening for the past 5-6 days). My battery also is draining significantly faster and laptop drops charge (30% in one hour) while in sleep mode.
Any suggestions on what I could do?