Hi beautyathollowend,
Before we begin addressing the possible reason for the missing months of transactions in your QuickBooks Self-Employed (QBSE) account, would you be willing to share the date range for these missing transactions? Are the missing transactions from the past 7 months?
Let me provide you with some insight into the possible reason for the missing transactions.
One common reason is that transactions may be hidden due to filters in QuickBooks, so be sure to set the Type, Account, and Date filters to All on the Transactions page to ensure nothing is excluded.

If the transactions are still not showing up, you can add them manually. Please refer to this article for easy-to-follow instructions: Add older transactions to QuickBooks Self-Employed.
Otherwise, contact our Live Support team to check your account. For further assistance, visit the QuickBooks Online Sole Trader and Self-Employed section in this article: How to get help with QuickBooks.
Feel free to reply to this thread if you have any other questions or concerns.