3 kids?

My husband and I are considering adding another baby to our family. We have 2 kids our son is 9 and our daughter is 3. I’m nervous because I hear 3 is way harder than 2. I feel like it’s a now of never thing because my daughter is still young and I didn’t want the big age gap. I loved being a stay at home mom but sometimes it’s hard because I have no one to talk to besides my husband or parents (basically no friends) I’m still a nursing student ( one year to go ) Is this too much to start trying now? I was hoping for a fall 2022 baby. How was the transition from 2-3 for you? Things you wish you would have considered?