If I answer from a newborn + two kids perspective I would say go for it, its easy peasy! Some of the best moments of my life were when my youngest was a little baby and the other two were under 3.

If I answered from my life as it is now....................I would say dont do it lol Honestly a majority of the hard yakka for us having 3 kids is Ds2 being autistic. If you took him out of the equation life would be a breeze with 3 neurotypical kids. You kind of just adjust and then it feels like #3 was always there.

I dont think you ever regret having more kids, and I always try to remind myself that these early hard years fly by and in 5+ years time it will all be a distant memory. Ive just got to get through the now. We plan on having atleast one more but my hard decision is about when not if we should have said baby.

Good luck with your decision!