Immune system

Ladies, my girl has been going to daycare for 6 months and is literally ALWAYS sick! I’m talking 3-5 days max in between sickness!

She’s had more colds than I can count, way too many ear infections, RSV, hand foot and mouth disease, got ear tubes put in and adenoids removed. She continues to be sick! Is this normal? Her daycare says they do all the deep cleanings but I’m not sure if I should look for a different daycare?

I asked her pediatrician about a weak immune system but he brushed me off saying this is normal. Is anyone experiencing this? Is there anything I can give her to support her immune system? I’ve tried the elderberry syrup but she refuses it every time 😩