I have a small heloc, about 50k. It’s all I have left on my house, mortgage wise. Currently trying to slap as much principal down on it as possible as it’s sti

I have a small heloc, about 50k. It’s all I have left on my house, mortgage wise. Currently trying to slap as much principal down on it as possible as it’s still in its “interest only” phase. Come 2024, it’ be interest and principal. Was told last year the payment will be abt 500. I reckon after rate jumps it’ll be closer to 800. Sigh.