Pregnant after c section

I'm not sure where to post this. So please bear with me. I had a c section may 15 my third one. In between my 2nd and 3rd we had a miscarriage and d and c. I just got a positive and my due date is June 12 but with the c section will most likely be around June 3. My babies will be 12 months and 2 weeks apart. Have any other moms had theirs close with c sections and how is it having them that close. Right now my boys are 9, 3 (special needs, williams syndrome) and 4 months. Any advice is appreciated.