Had the same thing done almost 2yrs ago but mine was behind my ear. Had the same initial treatment and I’m following the same precautionary protocols that katzbike passed along to you. My skin doc told me that my body has proven it knows how to make melanoma so its important to be observant of any spots that look out of the ordinary and keep up with regular derm exams. Also, if you have kids, they should be more diligent as well and get checked periodically.
Sounds like you caught it early. Good luck with recovery.