I have nearly 19 months between my toddler and my twins.
I am living the blur... I have one twin who Does. Not. Sleep. He has reflux. He is dairy, soya and egg free diet. The other is also cows milk protein intolerant. They weren't diagnosed until 6 months for one, a few weeks ago for the one who doesn't sleep. They are 13.5 months old. My toddler is 2 yrs 8 months. It is absolutely relentless, and feels worse because of the sleep deprivation (the non sleeper has 4-5 'in desperation' night feeds, wakes every 1-3 hours and always has done. Both were very discontented babies, no way, in hindsight, could I get two unhappy reflux babies in.a routine. Both were ebf too.
I thought if you had one that didn't sleep, what's the difference with two. I found out the hard way, after numerous nights when it'd get to 4am and I hadn't made it to bed as i settled one, then the other, then the first one again. We have a nanny now I'm back at work, an ex nursery worker who says my non sleeper is one of the most difficult babies she's ever looked after.
So, overall, a lot would depend on your twins. Now Mr. Non sleeper is walking and on meds for reflux he's miles happier, and for me, its way easier with him walking. His brother isn't yet though, so maybe I'll change my mind?! I won't, nothing could make me go back to those days
I also think twins then a singleton would be easier, as i couldn't manage going out by myself with an under 2 and 2 babies. You can't manoeuvre a double buggy round a playground to supervise your toddler, not in our local one anyway, and even if you could, mine will only sit in.the buggy while its moving and fairly briefly or its a cacophony of screaming. One baby you could have in a sling. I still can't manage a playground alone with 2 one year olds and a 2 year old.
All that being said though, I have a lot of family support, some paid help 2 days a week now (extra to my working two days) so that we can get out more and their twin interaction is so wonderful.
If i could have decided not to have twins, I wouldn't have. Maybe that wouldn't be the same without my help though?!