two under two

Erin
I have a son who is 1.5 years old and a newborn who is 4 weeks. The first two weeks were cake and she slept all day and decent at night... now she's a bit of a handful literally.. I can't put her down at all it seems or she just cries. As you can imagine also having a young toddler he needs me still. I'm just looking for advice from other mamas in the same situation to get ideas on what worked best for you in this situation?