How much is your emergency fund?

PGY2 last year was very broke and overcorrected and saved like 15k in hysa and didn't invest anything. Now HYSA rates are becoming trash and I'm in my advanced program so less known large expenses. I'm thinking of having only 3k my family lives in same region as me so worse case can lean on them which is nice. I would rather invest more aggressively. I live very frugally and enjoy just playing cheap indie games at home.