how to break up a bread recipe?
That looks pretty tasty.

If you only need a few hours you can just put the dough in the fridge when it does its first rise.

The cold will make it rise more slowly and buy you some time. Make sure to put the dough in a little bit over-sized bowl so it doesn't explode out if it rises more than expected.

In general letting dough rise for extra time like this will result in a more open texture. This can be good or bad depending on the style of bread but it seems like it will be fine with this particular bread.