BRRR strategy question

[Jeff Spector]

All,

I currently own a home.  (House-A)

I want to buy another (House-B), and then sell House-A.

My lender has pre-approved me or a mortgage for another house (House-B), without requiring me to sell my current house, (House-A)

I want to do a BRRR and buy House-B with hard money , renovate and then utilize the mortgage to lower the interest rate and pull out most of the initial investment.

If I borrow from the hard money lender, will that reduce my borrowing power for the new mortgage?

Wouldn't the lender see the new debt and possibly reduce my approval for the new house?

Any help is appreciated.