Http post sim a7672 speed up

Hi, I’m trying to build a device for my startup IoT-related, using a7672s,
here code :

mySerial.println(“AT+HTTPINIT”);
checkresponse(“OK\r\n”);
mySerial.println(“AT+HTTPPARA=“URL”,“http://” + host + resources + “””);
checkresponse(“OK\r\n”);
mySerial.println(“AT+HTTPPARA=“CONTENT”,“application/json””);
checkresponse(“OK\r\n”);
String st = “AT+HTTPDATA=”;
int pdl = postdata.length();
st += String(pdl);
st += “,15000”;
mySerial.println(st);
checkresponse(“DOWNLOAD”);
mySerial.println(postdata);
checkresponse(“OK\r\n”);
mySerial.println(“AT+HTTPACTION=1”);
checkresponse("+HTTPACTION: 1,200");
if (BuildINString2.indexOf("+HTTPACTION: 1,200") != -1)
{ Serial.println(“POST DONE”);}
else
{ Serial.print("ERROR POST: ");
Serial.println(BuildINString2);
}
mySerial.println(“AT+HTTPTERM”);
checkresponse(“OK\r\n”);

In the check function, we pass the check variable to check different possible responses of sim like ok, error, etc

void checkresponse( String check ){
int start = millis();
BuildINString2="";
while(true){
if(mySerial.available()>0){
inData =mySerial.read();
BuildINString2 = BuildINString2 + char(inData);
}
if (BuildINString2.indexOf(check)!=-1)
{ delay(100); return; }
if (millis()-start>3000)
{ delay(100); Serial.println(“SIM TIMEOUT”); return; }
}
}

How can we speed up the post time? becoz in my last module sim7600, I used CHTTPACTION, that was posted in less than 500 milliseconds but in A7672s, it’s taking more than 1 second,

can someone confirm possible issues or any other method of making the fast posting of data?
also in this http method, is HTTPTERM is required for every post or change in URL point or when it’s required?
http

This is not really an answer, I am using SIM800L, it takes more than 10 seconds to get an AT response back. I really want to get a one-second response