LO sick so fast

I have been hyper diligent about germs, handwashing and keeping my LO away from big crowds and people but he still got a cold and now the congestion has turned into ear infections. I suctioned his nose every few hours, used saline spray and had a cold humidifier running all night with a hot steam treatment in the day and he still got infections from his nose congestion 😥.

I even have him sleeping and eating at a 30 degree incline. I feel like a bad mom but I did like everything to try and prevent it. I think my husband brought in germs from work and now I am making him sleep in the guest room for extra measure. Just needing to vent my frustration. I know it's winter time but so soon?! First time mom here so I am sure seasoned moms must think I mlam overreacting but it really makes me wonder if I am doing the best I can or if I can do more.

My LO is not even 2 months yet 😣