@aj
Put the wife to work doing something other than being mommy.
Toddlers are a handful, and it's great that she can be with your child instead of putting the kid in daycare, but she can also manage to do some sort of remote work if she's at home, even if it's very part time. Something where she can drop it to attend to the kid's needs, and pick it up on her own time/schedule, but something that consistently brings in some extra money to your household.
Guaranteed there are some hours in her week where she has enough time to "sneak in" some work time. If she has time to shop online, engage in social media, hang out with mommy group activities, etc. then she has time to bring in some money.
Other than that, curb your spending (do not assume your $200K per yr. will always be there) live below your means, and invest in precious metals. Since you're in sales, you know how to hustle, so get other streams of income happening.