Hello michellew,
Glad to have you join the Community! I trust that all is well on your end. Rest assured, I'll be happy to assist so you can continue to use QuickBooks with confidence.
Creating recurring transactions is the best way to achieve the goal you've reached out about. The recurring transactions feature allows you to set up the transactions according to a set schedule of your choice. Here's a helpful article that provides more info about how to: Create recurring transactions in QuickBooks Online.
Let me know if this info helps. I'll be one message away in case you need further assistance.