Second time mommy!!

Hi everyone! I'm a second time mommy and so far I'm 6 weeks 4 days. Yesterday was my first appointment and I have to say I'm pretty excited. My family feels the opposite. Everyone is worried and concerned because my daughter is only 6 months and feels I robbed her of whatever time we now have left together. I'm not worried about forgetting about her or not giving her all of my attention but I know it will be hard juggling two babies, don't get me wrong. Any second time mommies or mommies with a big wolf pack have any advice? It will be really appreciated and please no negative comments or opinions. Not what I want nor need right about now. Thanks in advance!