It will get easier! Slowly but surely, you will find tricks that make it all easier & you will all fall into a routine.
In my experience, the first 2 months were HARD hard hard. My last babies were 24 mos apart & I tandem nursed. It was so difficult for me to have to say no to my toddler in order for me to care for the baby. And it was SO rough not being able to DO anything, like make pancakes! Or do laundry, or get dressed, or take a shower, or make lunch, or just anything. I did shed tears over how hard it all was a few times. But seriously, *slowly but surely* we started to find our groove. It just took adjusting. After about 2 mos I stopped feeling like I needed to cry over the difficulties, & I was managing to get dressed, showers & dinner done. I never did resort to processed foods though! Although we did let my toddler watch way more videos than I was comfortable with... After about 6 mos I felt pretty fine & normal. I could even leave the house alone with both babies! ~gasp~
I definitely relied heavily on my sling! I couldn't have functioned without it. I used a Moby wrap & a Maya ring sling. My newborn pretty much lived in it except for his 98876.6 diaper changes per day. I also relied heavily on the support of my DH, mom, & MIL. They all helped so much with the toddler so I could make dinner.
Anyway, it's tough going for awhile but don't forget! It will get better & better & easier & easier as time goes by! Mine are 3 and 12 mos now, and I'm excited at the thought of getting pregnant with the next one! lol