Extensions on missed construction loans

Are there alternatives to extensions are others using when dealing with construction-to-perm loans that are not finished my maturity? We are considering the possibility of advancing any remaining proceeds available on the loan to a checking account, which would have a hold to prevent use outside of the original agreement, and starting P&I repayment rather than extending the loan. We would continue to draw those funds to complete construction, just from the checking account rather than the loan itself. Curious if there are any drawbacks or compliance issues with this method.