You are right at that corner where this will become possible. Before 18 months, there is no way. But at 18 months, they usually can play independently for longe

You are right at that corner where this will become possible. Before 18 months, there is no way. But at 18 months, they usually can play independently for longer periods, and you should be able to put some time into work. The older they get, the easier it gets. But I have two recommendations: 1) Find activities they can get caught up in for long periods of time - drawing, crafts, or something like that. You need them to be nearby, but independently occupied. 2) Find work that doesn't require being "in the zone". You won't get a solid 2 hour block of time. You will get interrupted often. If you choose work that will suffer from frequent interruptions, you will struggle to succeed.