Airtel — airtel 4g hotspot data problem

My airtel 4g hotspot is giving me a headache. Whenever i turn on the hotspot, internet seems to work just fine but after 5-10mins, data icon starts blinking and the data connection is completely lost and won't work until i turn it back off and then turn it on again. It's so frustating because my downloads get cancelled because of how unstable the internet. I have 4 airtel sims and all of them show this issue. Please help, i am annoyed as hell!