My amex link is working but I'm missing about 6 weeks of transactions from last year. Any advice on how to solve this without having to enter the expenses one by one?

Thank you for posting here in the Community, @Kritzman.

I’ve seen that you’ve posted twice on the Community page. My colleague already addressed this issue about the missing AMEX transactions in QuickBooks Online. You can visit the link to view his recommendation: https://quickbooks.intuit.com/learn-support/en-us/payments/re-some-of-my-linked-amex-expenses-are-not-showing-up-even-after/01/1416818/highlight/true#M55429

I'm more than willing to help if you have any other concerns with your bank transactions. I'll ensure your needs are taken care of.