은 좀 어때

how is …?

→ 은
phrase Uncommon #10,090
how is …? 은 marks the topic; 좀 softens the question. 어때 is casual, while 어때요 is polite.
KO: 오늘 기분은 좀 어때?
EN: How are you feeling today?

지금은 좀 어때?

How are you doing now?

— 아마코드 (1973)

두통은 좀 어때?

How's your headache?

팔은 좀 어때?

How are your arms?

— 와호장룡 (2000)