on pins and needles
(idiomatic) Feeling sharp anticipation or anxiety; in a state of suspense.
You can't do television shows caring whether or not the network picks you up. You can only do them enjoying the work, because if you're always on pins and needles about whether you'll be picked up, you'll lose your mind. I learned that the hard way. Jon Cryer
But he was conspicuously quiet Tuesday about one big issue keeping much of the globe on pins and needles: the spread of a deadly new type of coronavirus. Source: Internet
When he does propose, she will 100% say yes but it’s not something she’s on pins and needles waiting for. Source: Internet