I was in the same boat!
My oldest was 14 months old when I had TWINS!
So I had 3 under 2, really 3 under 18 months! The first 3 months were VERY difficult, but now it's great! Sam is 5 and Matt & Liz just turned 4. They play together, are all interested in the same level/ type of toys, it's really a great thing for me! I survived and so can you!
GOOD LUCK!
You can do it!