My two are 21 mths apart, and TBH it took me about 9 mths to really feel like I knew what I was doing! Its really hard - we TT DD1 as soon as she turned 2 - and that was hard work!
It is easier now, and they just adore each other which is lovely! But - I don't really feel like I'm an active member of society we stay home a bit!
HTH