Some call it density training. Pick a big structural lift. Pick a period of time like 3 minutes or 5 minutes. Place a weight on the bar you can move around 15 reps. Do as many as you can fit in the time. Each week, match the weight and add a rep, or add the weight and keep the reps. Or increase the both. BUT DO NOT DO MORE TIME.
In less than 5 minutes, this workout does more than most people’s 90 minute training. Aiming for 345 x 23, 4, 3, this week, I’ll have 10 more reps at 60 more pounds than 5 weeks prior (video here: https://www.instagram.com/p/Bz-broqDVPc/). Don’t burn up time. Just aim to get better.
Make time, but not a lot. One way you make time is to train smarter. When you implement strategic progressions, you don’t need more than a few minutes to warm up and a few minutes to throw down. .