my girls are 12months apart and my second and third are just under 2 years apart..
It's hard going from 1 to 2 no matter what the age gap, its a big adjustment when you are just used to dealing with 1, obviously it becomes a bit harder but its never as bad as you think it's going to be, the first few weeks are tough but as soon as you figure out a routine you will be fine.
With two so young you just need to learn to organise (things out the day before so no rushing etc) planning trips in advance