Touch-and-go

Touch-and-go - dangerous and uncertain in nature or outcome.

Example - "He just had major surgery followed by touch-and-go recovery"

Image - https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEggzvo1veGsKZSvfIi7x8nwRrHZZGqrrsJiZkMt1VOahXpDDrXlFp6KA67800sGsxl0_G_pJqFuD5cM8qd9aknYLG5XL-jmqZneBbAaCsVFsjQ-Nzp637jrxJTOB_cU1FXQK13i7qttuT4/s1600/TOUCH+AND+GO-GO-GO+TITLE+CARD.png