I had exactly 3 years between my first and second and 2 years between my second and third. (My fourth was after a 6 year gap, and that was just fun, with 3 adoring brothers to mind her).
The 3 year gap was a breeze, but even the 2 year gap was fine. All were BF, but there weren't long hours of sofa-bound feeding after the first - in any case, the advantage of BF is that you do have a hand free to do other things.
My toddlers were all too active to endure hours of sitting around, so the baby would be fed, put in the sling or pram, and we all went out to the park/garden or for long walks, or to visit friends. If the baby needed a top-up, it wasn't hard to do, wherever we were; no fiddly bottles to worry about. My babies were all big (between 9.5lbs and 11.3lbs) and fed easily, I suppose, but I found I got better at organising myself after the first.
Each baby had to fit into the routine of the earlier child, more or less, and you do need to keep as fit as you can and get on with it. Second and subsequent babies don't get the same one-to-one time with parents perhaps, but they have the huge advantage of always having an older sibling around for fun and games.
Mine are all best friends still, and they're in their 20s and 30s. They've been such a joy.