Last night was hell for my babies😔😭

My 2 year old was up all night with a horrible cold, now all of us including our 10 week old have colds. It's been awhile since having one so it hit with a vengeance. Now I'm worried sick about my little one. He wouldnt breastfeed all night long which is unusual for him. He sounds so congested. ANY tips to help me help him get better would be amazing!!💕💕