My iPhone XS keeps freezing.

My iPhone XS has frozen twice now I since updating to iOS 14.1. I know from comments a lot of people are having this issue but mine seems to freeze in the weirdest way. Both times happened in the space of 3 days and both times they froze in the same way. I cannot open any app, nor can I lock my phone. I cannot restart my phone to try and fix it because it just won't do anything when I hold both buttons down. Oddly though I can hold the power button down to bring up Siri, though Siri can't do anything either. The phone still functions in a sense that it lets me swipe through my home screen pages and open folders. I can access my control centre and the only thing from there that I can do it turn the torch on and off or turn on screen recording.

The only way I've been able to fix it was to let my phone die and it fixes itself after charging or this time I had my husband ring my phone and that seemed to do something because it started working again.

Anyway to fix it?? or do I wait for the next update in hopes that they've fixed it.