I found the opposite. New born is so much easier in the sense that they just eat, poop, and sleep 24/7, and it takes no time to make milk/formula or change a diaper so I found myself working on the yard or playing video games alot more than before while the baby sleeps, or even going out for lunch/dinner quite frequently because the baby can sleep anywhere in the car seat/ Bassinet.
Now that our girl is eating solids (which means we need to spend time making 3 meals/day) and crawling everywhere ( aka requires constant supervision) and get bored so quickly (stuck watching baby shows on TV ) we have no time to do anything else. Things were so much easier a year ago when she was a new born lol.