Im Charlotte mum to 4, Ryan 13, Adam and Thomas 5, and Paige 3.
My boys turned 2 in the dec and Paige was born in the jan so just 2 years between them.
I did buy a triple buggy but to be honest i only used it a few times as i found it more of a pain to get around so i wouldn't recommended that.
I did find i went even short journeys in the car for the first 12m at which point the boys were 3 and had more of an idea about holding the buggy but to be on the safe side i brought twin reins. They have a belt that you wear and their reins clip on to that so you keep your hands free.
Have you got any friends who have 1 child ? i had a spare cheap double and when i went our with her she would put her daughter in my double with one of mine so we both had 2 children each
It does get easier, i promise
i now walk to school with all 4 and no buggy and its a 2.5 mile round trip