Baby #3

So we are planning for baby number 3, but. 2 together . We have a three year olde together, he has a 2 year old. Bringing another baby into this work is something we both want but I am kinda nervous. I would wait until they’re a bit older but I had a lot of health issues my first pregnancy my doctor said the older I get the higher of the risk I’m going to be , we are 24and 25 with careers already set in stone. So we aren’t worried about money this time . I’m just worried about our other children how they feel. I was a single mom for a long time so it has been just us for a while and is basically the only child when she’s not with her sister (which isn’t a lot ).any advice plz lmk