Powershell Nested functions error handling failing - powershell

Question

I need help on the issue which I'm facing using the below code.
The below function has 2 nested functions, the problem here is when I get an error in the first nested function I put a break to come out entirely from the Main function (without executing anything further).
In my case, it is continuing to execute the 2nd nested function, which I
don't want.
<
Write-host "All the retry are finished..!"
break >
Hereafter break, I would want it to come out from the main function, need your help to correct me if I am
phrasing them in the wrong way..!
Function MAIN
{
[CmdletBinding()]
param (
[Parameter(Position=0,mandatory=$true)] [string]$server
)
Function Failover-Readiness
{
Try
{
[int]$Log_size_th=100
[int]$retry=0
$TF=
"sample query 1"
DO
{
$RS=invoke-sqlcmd -ServerInstance $server -Database Master -Query $TF | Where-Object{$_.role_desc -like "*secondary*"} |
`Where-Object {($_.log_send_queue_size -gt $Log_size_th) -or ($_.redo_queue_size -gt $Log_size_th)}
##############################################
$Q= "sample query 2"
$R=(Invoke-Sqlcmd -ServerInstance $server -Database "MASTER" -Query $Q -QueryTimeout 20 -ea stop ).cnt
$Count =$R
$RSCOUNT=$RS.count
write-host `n"open tran count is $count and log/redo queue size DB count is $RSCOUNT " -ForegroundColor Yellow
if (($count -gt 0) -or ($RS.Count -ge 1))
{
$retry=$retry+1
write-host "retry count is $retry"
Write-Warning "there are atleast 1 open tran or Log/redo queue size are gt 100"
start-sleep -Seconds 5
if ($retry -gt 5)
{
Write-host "All the retry are finihsed..!" -ForegroundColor Red
break
}
}
else
{
write-host `n"There are no open transactions and Log/redo queue size is lt 100 !" -ForegroundColor green
}
}
while(($count -gt 0) -or ($RS.Count -gt 1) )
} ##Try
catch
{
write-host $_.exception.message -ForegroundColor Red
}
}##Function
Failover-Readiness
Function Test
{
write-host "Test Function"
}
Test
}