Can only make taskbar small on one monitor

After upgrading from Windows 10 Pro to Windows 11, I found that the taskbar on both monitors was larger than previously. By adding the DWORD value TaskbarSi to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced and setting the value to 0, I was able to get a smaller taskbar on the primary monitor, but this reg value doesn't reduce the size of the taskbar on the secondary monitor. Is there any way to do that, other than completely eliminating the taskbar from the that monitor?

On Windows 10 I was able to have a small taskbar on both monitors.

I do not use 2 monitors, but I do use Stardock's Start11 and it appears the app can do what you want. Their website states "The enhanced multi-monitor support in the v1.2 beta allows the user to define window grouping for primary and secondary monitors so that the user can dial-in the perfect taskbar experience. Users will also be able to re-size the taskbar, allowing them to increase its height to make it easier to see all the windows on their taskbar."Start11 v1.2 Beta Brings an All-New Taskbar Experience to Windows 11