Yo dont get depressed. That’s a bad workout habit. Sometimes you cant help it, but we ALL started out weak. We ALL had that one stubborn lift that doesnt go up, or keeps injuring you (still have mine at 26). Working out is 50% mental fortitude, arguably more when you first start out.
Fuck rest times. I’m running Coffinworm from 5/3/1 forever right now. I usually give myself no more than 90 seconds rest, until the final 1-3 rep set, which I’ll take an extended rest just to clear my mind. But push came to shove and i have about 35 minutes to lift, and I finished it, only rest times was loading the bar.
Yes you should rest, but dont over do it. My coach in high school blew the whistle every 30 seconds on a two man lifting group. If you weren’t under than bar, physically holding it when that whistle blew, you got kicked out of class. I never missed a lift then. I think you’ll be fine.
Tldr. Fuck rest times. Warm up, move the weight, rest only as long as it takes to catch your breath, do it all over again.