Regarding HELOC’s, 1026.40(f)(3) says a change in terms is not permitted on a HELOC unless it meets one of 6 criteria; number 4 on that list is that it will “unequivocally benefit the consumer throughout the remainder of the plan.” And when looking to the subsequent disclosure rules say, the change in terms section states:
1026.9(c)
Change in terms. (1) Rules affecting home-equity plans. (i) Written notice required. For home-equity plans subject to the requirements of §1026.40, whenever any term required to be disclosed under §1026.6(a) is changed or the required minimum periodic payment is increased, the creditor shall mail or deliver written notice of the change to each consumer who may be affected. The notice shall be mailed or delivered at least 15 days prior to the effective date of the change. The 15-day timing requirement does not apply if the change has been agreed to by the consumer; the notice shall be given, however, before the effective date of the change.
(ii) Notice not required. For home-equity plans subject to the requirements of §1026.40, a creditor is not required to provide notice under this section when the change involves a reduction of any component of a finance or other charge or when the change results from an agreement involving a court proceeding.
1026.9(c)(1)(ii)-2
2. Skip features. If a credit program allows consumers to skip or reduce one or more payments during the year, or involves temporary reductions in finance charges, no notice of the change in terms is required either prior to the reduction or upon resumption of the higher rates or payments if these features are explained on the initial disclosure statement (including an explanation of the terms upon resumption). For example, a merchant may allow consumers to skip the December payment to encourage holiday shopping, or a teachers’ credit union may not require payments during summer vacation. Otherwise, the creditor must give notice prior to resuming the original schedule or rate, even though no notice is required prior to the reduction. The change-in-terms notice may be combined with the notice offering the reduction. For example, the periodic statement reflecting the reduction or skip feature may also be used to notify the consumer of the resumption of the original schedule or rate, either by stating explicitly when the higher payment or charges resume, or by indicating the duration of the skip option. Language such as “You may skip your October payment,” or “We will waive your finance charges for January,” may serve as the change-in-terms notice.
In this situation I don’t anticipate excessive fees or usury laws being an issue, but that might be something to consider under state law. Here’s a link that summarizes Ky’s usury law (https://statelaws.findlaw.com/kentucky-law/kentucky-interest-rates-laws.html). I have not verified it is accurate, but it might get you started. You’d want to look to the state law cited in your contract.