Y won’t my iPhone stay connected to a iPhone hotspot for long, but I can stay connected to my androids hotspot as long as I need.

Hi _BhAd_Bxxxh_,

Thanks for posting in Apple Support Communities! Since the hotspot connection doesn't seem to be working as expected, give these steps a try:

1. "Check that Personal Hotspot is turned on in Settings > Personal Hotspot. If you can't find or turn on Personal Hotspot, check that your wireless carrier enabled it and that your wireless plan supports it.
2. Restart the iPhone or iPad that provides Personal Hotspot and the other device that needs to connect to Personal Hotspot. 
3. Make sure that you have the latest version of iOS or iPadOS.
4. On the iPhone or iPad that provides Personal Hotspot, go to Settings > General > Transfer or Reset [Device] > Reset, then tap Reset Network Settings."

-If Personal Hotspot is not working on your iPhone or iPad (Wi-Fi + Cellular)

These steps can resolve many issues with Personal Hotspot. We also suggest disabling Low Power Mode if it's enabled as that feature can limit connections to save battery life (Settings > Battery).

If it continues, let us know if other devices are able to stay connected to this hotspot.

Cheers!