Hi there, @ibemomofthree-gm.

Allow me to share some information about printing checks in QuickBooks Online (QBO). Currently, the option to turn off the Print later button is unavailable. 

However, there are two ways to ensure that your created checks are in order.

First is to manually enter the check number without checking the Print later option. Note that you have to print them one by one. 

Next is to mark the Print later option then when you'll need to print them make sure to enter the Starting check no. so the number will be assigned and increment to each checks. 

Also, I've added an article that will help guide you to align checks when printing. 

Please know that you can always post here if you have QuickBooks concerns. I'll be around to help. Take care always.