Our rear lawn is about twice as big as the front lawn. I cut the front lawn a few days ago. Although I started on the rear lawn, I've had to take a break as it is still much too wet in places. Another hour or so and I should be fine.
The last time I cut the rear lawn it I needed 4 breaks, but think my stamina is a bit better now, so fewer breaks were needed. Although not perfect, it is much better for being cut.