For memory warning on VCSA 7 for tiny environment >> Please try stopping the vmware-pod service and check after 15-20 mins if the warning again triggers. Worst case is to increase memory by 2 or 4 GB .
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vcenter.install.doc/GUID-88571D8A-46E1-464D...