In this case, Custom Study > Review ahead (1 day) makes more sense to me, but if you want to see only the cards due tomorrow with an interval>20 days. Custom study > “prop:due=1 prop:ivl>20 deck:your_deck” should work.
ah yes, I see I could just filter and then set the cards due for today.
only thing that peeves me about this is that I think it doesn’t change the interval length of the cards but considering it’s more than 20 days interval this shouldn’t be an issue