H.P.
Everything the other moms suggested is great- I just wanted to say that my daughter went through this when her brother was born. She had just turned 2 as well. I would not even leave the baby on the floor unless I was right next to him because I was afraid she would throw a block at his head. Anyway, the phase did pass. I just ignored the baby regression she was having the best I could and tried to give her one on one time. They are now 4 and 2 and best buddies and my daughter is right on track with age appropriate stages. It is very hard when her husband is gone a lot. Try to get out of the house every day and go to a play area or park, library story time etc. Having some fun activities will make it easier on you and give your toddler an environment with less focus on the new baby. It is just jealousy and a big adjustment for everyone. It will pass!