There is such a thing as being in the flow. This is when we are flooded with inspiration. It flows freely accompanied by the drive to take action. I have found in the past that these experiences come along with bursts of energy. Taking action feels more like a rush or a buzz.
As with many things there is no black-and-white answer to this question. I can only share my experience and hope that it helps someone. I have found that the lull of activity is there for reason. Maybe it's time to take a break or focus on other areas of life.
Pushing against the stagnancy often times leads to poor results. Whatever you come up with during that time is probably not going to be your best work. This, in combination with the lack of productivity can feel very depressing.
I feel that during these times productivity can be found in other areas. Maybe we need to focus on her health or well-being. There's usually some other area of life calling our attention. There could be more information we need before we can move forward in a successful way.