@psyche69 This is the standard recommendation for training during a cut:
same as regular hipertrophy, or slightly less volume. This is not a controversial topic, it's basic stuff.
The main reasons behind it are a) you can't recover as well during a cut, so that's the best you can accomplish, and just in case this is not just about losing performance, enhancing muscle protein breakdown by doing a ton of work goes directly against muscle retention because during a cut you can't produce enough muscle protein synthesis to balance it out, you'll
lose more muscle this way, not rataining it more; and b) you can't build the same if any muscle mass, so it's pretty much a waste of effort, you should focus on maintaining your muscle mass, finish your cut as soon as you can with minimal losses and
then starting a productive bulk where you focus on building muscle.
If the correct way of training during a cut is regular hypertrophy or with less volume than normal, you can understand how a specialization block, where you do
more volume and frequency than even during a regular massing phase, it's the absolute opposite. Those blocks demand the highest degree of recovery capabilities out of any other type of training, and you want to do it during the circumstance where you have the
lowest recovery capabilities out of any other training phase.
Regardless, if you purchased the program from Jeff Nippard, since he's aware of the science, I'm sure he should have included instructions or a FAQ that tells you when it is and isn't a good time to do this program, and if not, being a client I'm sure you have a way of communicating with him directly to answer this question.