This process can be a bit tricky on Kickstarter. Fear not. We're here to explain all your options:
1. You can adjust your pledge right now. Follow this link for instructions on how to do so: https://help.kickstarter.com/hc/en-us/articles/360053930194-How-can-I-change-my-pledge-amount-or-reward-selection-through-the-app-
2. You can wait. Once the campaign ends, we will offer backers the option to add other items to your order with a simple click and you'll have plenty of opportunities to do so.
3. You can do nothing. If you're happy with what you've already got, we're happy too.