After you leave your job, your income will be $9.5k a month, maybe a little more since your husband might pay less in taxes. Your expense are $10k. This leaves you with a shortfall of about $8k per year (if you don't round). Your assets should provide you with enough income to make up that shortfall for a long time. In the mean time, you may want to save some more cash. You only have 3 months of living expenses, if you don't want to touch the investment and retirement accounts.
The only thing that stands out, is the child expenses. What does that pay for? You state that your child is mostly taken care of by grandparents, so I assume its not daycare or nanny. How are these expenses going to grow as your child grows? For example, you seem to be very well off, and most people with that sort of money want their kid to have a horse, play the harp, or partake in some other expensive hobby. What about schooling?