Toddlers and new baby

My daughter is about to be 2 in April and we have been having a hard time with her since before baby was born and it’s gotten worse since we brought her brother home. Sometimes we are worried maybe she’s feeling neglected and we aren’t spending as much time with her as I had a c section and I’m not able to do much with her. I think as of right now it’s just her going through getting another sibling and not fully understanding certain things so we are just trying to be patient with her and make sure she’s not feeling neglected or left out

We're struggling too, My son is 26 months old and we have a 2-week-old daughter. I was always the primary caregiver with my son and since we had our daughter our son has been spending a lot of time with his dad and as awesome as that is for both of them, it has also been somewhat dysregulating for my son because my husband is not typically the primary caregiver and so just does things differently than my son is used to. We are looking to get back into our regular routine this week, so hoping that remedies some of the behavior issues we've been experiencing.

I've been letting my daughter (3) help as much as possible like she rubs his back to help burp, he holds her finger and she grabs his paci, diapers etc.
I also put baby between us on the bed while watching TV. Just try to keep him involved its helped a lot with the tantrums. By boy just hit a month old and the first 2 weeks were the hardest