Really tough sometimes

So I have a little boy who just turned 12 months on the 9th and a one month old.. it has been really hard sometimes. As soon as I finish feeding one the other one needs to eat, as soon as one gets a diaper change the other needs one. And I still need to pick up my house and manage my business.. I just get so overwhelmed sometimes when they are both crying at the same time but I can only deal with one at a time.. it kills me to hear my 12 month old scream because he is hungry or wants a diaper change while I do the little one or vice versa.. it’s just so hard sometimes..