URGENT-Working w/ Multiple Mortgage Brokers

[Ebi Amiri]

I have been working with a mortgage broker and she has provided me with conditional approval. Meanwhile, I found another broker with much lower rates and asked her for conditional approval. None of them have locked the rates yet as they both mentioned lenders do not lock the rates immediately these days. Today, I realized that, interestingly, they work with the same lender (how come the rates are different then!). I am wondering if it is okay to keep working with both and see which one can lock lower rates. Please advise.

I understand both brokers and I are putting time into this, but I also understand this is part of "shopping around" since they cannot lock any rate for me until the conditional approval is completed.