Yes! On Monday of each week, you'll receive an email with following week's meal recommendations. In the email, there will be a link to the page where you can swap your meals. You have until Wednesday at 11:59pm PST to make changes. Otherwise, the recommended meals will be shipped.
First you will need to log into your account by clicking here. Then hover over the "Account" drop down on the top right corner. Click "Meal Plan Preferences".
On the bottom of the page you will see the meals that are scheduled to be delivered the following week. Then click on "Swap Meal" under the meal you'd like to swap.
You will then be able to select the meal you would like to swap with according to your meal preferences. Click on "Select Meal" to continue the swap.
Once you have swapped all desired meals, click "Update" at the bottom of the page to finalize order.
Note that meals can only be swapped after you have received the "meals for next week" email and before Wednesday at 11:59 pm PST, prior to the week of delivery.