When does it get easier

I’m drowning. I work full time, have a 2.5yo and an 8week old. I went back to work at 6weeks pp. I’m getting maybe 4hrs of sleep a night. My husband cooks and does the toddler’s bedtime but I always have the baby. I wfh and moved my office space to my mom’s bc she’s who watches my oldest. I have the baby easily 7hrs out of the 8hr workday. They take him when I have calls or meetings but he just cries when he’s not with me or asleep.

I worked hard for my position. Not to mention we can’t afford me not having a job. I’m just so tired.