Both of my kids are sick...advice?

Anyone have a sick toddler with a newborn before? How’d that go? My 3 year old had a 24 hour fever and is really snotty. I have a 5 week old. I’m pretty anxious about him getting sick. Anyone have any non scary stories?

I don’t know if this helps but in December I brought my newborn home while my boyfriend and my 3 yearold daughter at the time had covid me nor my son (newborn) ended up with it. I just kept my hands clean and area sanitized I was also breastfeeding at the time so I don’t know if that took any part in it or not but he was completely covid free. My daughter has had cold and stomach bugs since and he’s been pretty good besides the occasional stuffy nose but I just kept him free of boogers and gave warm baths and he’s been okay!