2.5 year old gets sick / fevers every 2-4 weeks. Is this normal?! Going insane.

My 2.5 year old had a bad 7 day flu beginning of February with high fevers everyday and cold symptoms.

Then just 2 weeks later, another 5 day flu with cold symptoms ams fever.

Now, just 4 weeks later, she has another bad cold and fever.

She went back to daycare just 2x a week after being off for 3 months — and it’s only her second week back. I also do bring her out a lot.

I just dont get why so many fevers? I’m a little on edge and worried now as her last fever resulted in a febrile seizure and left me traumatized.

Is this normal for toddlers to be sick every 2-4 weeks with fevers and colds / viral illness? before February I believe her last sickness was a few months before that but recently it’s been insane.