The longer the period in between reviews the larger the gap can become between the manager and employees perception of the employees performance.

Personally I don’t think once a week is absolutely necessary but I tailored it to the employees. I let them choose a cadence with a maximum of once a week and a minimum of once a month and had a mixture of choices amongst my team.

Some people also want to feel heard, but I had to balance that out with my other responsibilities and couldn’t guarantee I could drop everything to talk, so I carve out the time on my calendar and also made it clear that we could drop the meeting that week if both parties felt it was unnecessary