The ArcGIS Pro 3.5.4 patch is available to download from My Esri as well as through the software update in ArcGIS Pro (if enabled).
To get the latest fixes, please install this patch. For a list of issues addressed you can review the Release Notes for ArcGIS Pro 3.5.
Note: ArcGIS Pro 3.5 must be installed before subsequent patches can be installed. Here is additional information about Minor Releases and Patches.
If your organization is not on the latest version of ArcGIS Pro, starting at version 3.4 it is possible to specify an UpdateTargetVersion so that you can keep software updates enabled for a version of ArcGIS Pro that is not the latest. Read more at Update ArcGIS Pro at Your Own Pace.