SOLVED Calling Finance Math Nerds - Puzzling Loan Statement

My friend contacted me and sent me a picture of a loan statement, and we're trying to figure out why there has been a big decrease in the payment amount applied to interest, and an increase in the amount applied to principal.

Here's the info I have:

Outstanding principal $127,655.66
Interest Rate 4.400%

Last month paid principal $181.80
Last month paid interest $477.72
Total $659.52

Current month principal due $228.63
Current month interest due $430.89
Total $659.52

Based on the borrower's description of the loan, I think it's a 5/1 ARM, and the loan originated around April 2022.

My first question was if the rate had changed and the answer was no, 4.4% has always been stated as the interest rate. I also asked if there has been any special payments to paydown the principal and the answer was no.
I then thought about a change in amortization, but decided against that since the total P&I payment is unchanged.

Playing with the numbers anyway, I'm getting a remaining amortization of 336 months which means it would have been 360 months at origination in April 2022. Here's my Excel function =NPER(0.044/12,-659.52,127655.66,0,1)

The possibilities that I'm thinking of now is that the current month due P&I values are simply incorrect, or that the loan is actually accruing interest at a rate less than the stated 4.4%, I'm estimating around 4.05%.

What's the Money Board's thoughts?