Internet Drops when using MS Teams for Kids Home School.

I currently have the Arris S34 Modem paired with the Netgear Orbi CBK752 mesh router. My internet drops only on weekdays and only when my daughter is on MS Teams for her online school. I previously had the Netgear modem/router CBR750 it it worked great until my daughter joined this school, when the issues arose over 1 year ago, I switched and even tried the Arris G54 which it still dropped. After on dropping the Arris G54 I called a tech out and he replaced some thing son the outside of the house and it seemed to work for a couple weeks but then school was out for summer break. Now back on, we have the same issue again and I'm wondering if anyone else has experienced anything similar and what could be the issue?