Let's use a case study as an example of what this looks like in the real world. I recently started coaching a 26 year old woman with an 18:11 5k PR, having run at an SEC school (that was sprint dominated, and didn't have much of a distance program). She was going to be racing 5k/10k, but also wanted to race a half marathon at the end of her training cycle. She has a bit of an injury history, so she cannot handle high volume. We decided on an approach where she would average 45 mpw on 5 days a week of running, with a peak of 50 miles. You can come at the half in one of two ways. Because of that need for relatively low volume, we decided to go with a 5k/10k oriented approach to the half rather than a marathon approach to the half. That meant 5k/10k oriented track sessions balanced with longer tempo sessions, which were often combined with her long run in order to give her more recovery days between workouts and because with only 5 days per week of running, I didn't want 60% of her runs to be quality days.
Below are her track sessions to finish out the cycle. She ran a 17:3x 5k at the end of the cycle. Well, in full disclosure, the 5k was the next to last week of the cycle, the goal half-marathon was at the end of the last week listed below. This does not include an additional weekly tempo session. Note the inclusion of workouts right up through the last week. Note the workouts at vo2max pace right up until the week of the 5k, the week before the half. Note the work at faster than race pace the last three weeks. I never suggested that you pack it in and stop working the last month of a training cycle; but rather that the emphasis of your focus should shift to recovery and race modeling, not fitness building. If you are doing workouts 10 days out in the hope that they will increase your fitness for race day, THAT is a disservice.
6 x 800 at 5krace pace with 2:30 rest
5 x 1000 at 5k race pace with 3:00 rest
4 x 1200 at 5k race pace with 4:00 rest
4 x 1 mile at tempo pace with 1:15 recovery
5 x 1000 at 5k race pace with 3:00 rest
3 sets of 200 at mile race pace, 200 jog, 800 at 5k race pace, 200 jog, 200 at mile race pace; 4:00 jog between sets
3 x 200 at mile race pace with 200 very slow jog; 6 x 400 at 5k race pace with 200 slow jog; 3 x 200 at mile race pace with very slow jog
1 mile up; 4 x 1200 at tempo pace with 1:00 rest; 1 mile down