Anonymous wrote:OP says he doesn't take her work seriously. When describing her work she says it takes focus, is hard, etc. All this may be true, but it makes you sound a bit whiney. I assume you really LIKE that you work, and even if your household may not absolutely depend on the income it makes you happy. And you are unhappy when people undermine it, such as assuming you can handle your MIL at the same time as you're super busy.
NP, and this view is totally missing the other part of the dynamic, when OP identified ONE MONTH of the year that she asked that her MIL not visit, and her DH is going ahead with plans that go into that time period and he is now dismissing her concerns as "controlling". Even if OP likes her job, even if she's whiney (which I don't think she is but anyway), her DH is being a jerk. Whether he's being a jerk because he's just not taking her seriously, or a power-controlling jerk, no one here is going to know without knowing more about the dynamic.
But there is enough info here to be sure he's being a jerk.
OP, I agree with others that you should really try to find somewhere else you can work out of, maybe for Sept AND Oct so your DH can get used to what the workload is like when you're not home at night. You dont' want to be negotiating all those difficult conversations, details and his realization of just how hard it is to do all the other things you do when you're up against your deadlines, so start working out of the house in Sept.
Do you have anywhere you can go do to work? Even a friend's house where they have an office, or a relative's house, or actual other office space? Does your employer have space for you for 2 months?