ive dealt with this too about a year ago i stopped killing myself trying to make a great first impression doing everything right and tried to just make some effort but still be myself   to try to explain bc thats what we do lol if my normal effort for friends is 70 and i would bust ass and analyze everything and be on my absolute best behavior when meeting people was 100 i would not only be exhausted from the mental effort but also freak myself out for the next few days trying to figure out what i did right and wrong to do better next time  now i aim for 80-85 when meeting new people i do still put in more effort to not interrupt or overshare and to be on time but if i slip a little or am 5 minutes late then thats just who i am and they can accept it or not  although i definitely havent been as quick to connect with many people i have ended up making one really good friend who actually likes me for who i am im pretty happy with that trade-off  hope this is helpful