Yes you can.
A hot plate is usually used in the 120 or something Fahrenheit range.
Ive used my hot air gun for my brother’s.
If you hold it back a bit,it won’t expose it to the max heat. Just don’t hold it up right on the screen. I’m pretty sure your iPad has the digitizer and lcd as one piece. If you’re replacing the screen,make sure you have the lcd digitizer assembly. Use like 100 c hot air at max airflow and no nozzle. Be cautious not to overheat it. Stay at that range,and it should be fine.