My credit score union is providing a price lower than what my lender is providing for my mortgage : personalfinance

I requested my lender a couple of decrease price from my credit score union and he hasn’t responded

Supply was accepted on my home and signing escrow papers.

I despatched an e-mail to my lender asking about profiting from the charges my credit score union is providing (5.75%) as an alternative of the 5.85% he has me written up for.

He hasn’t responded to that e-mail however did ship me an e-mail to docusign the mortgage he has arrange for me at 5.85%

Ought to I press it, simply signal his docs, or apply for the mortgage from the credit score union with out listening to again from him, or is it to late within the recreation now?