Theoretically no matter how much I burp the Jar, it will never hit 60% in these conditions.
How are you currently measuring the humidity in your jars? You can bypass ordering gauges off the net with a simple trip to a petco. The little digital hydrometers for reptile tanks work fine and dandy. I've actually seen people marketing those on amazon and they just cut a hole in the top of a mason jar, plopped one in and sealed it. I've tested them in jars of bud and empty jars with boveda packs. They're stupid cheap as well. Just be sure to look for the % sign at the end of the number. I was looking at one backwards and thought my jar somehow got way off. Grab the digital though cause the little analogue ones can be off by a few degrees sometimes if they're shaken around. They're very fragile.
A method you can do without a dehumidifier would be just to lay your buds out and have a fan blowing on them. It's not ideal but like you said neither is mold. Don't have your buds get blasted with wind but with a slight direct breeze. It'll dry out the outside a bit. You wanna wait til they get feeling "crispy" then rejar and sweat them. The inside moisture will spread throughout and the overall RH wil drop. But I'd check on them every hour and a half to 2 hours. Set an alarm. I fell asleep and took a 6 hour nap once while doing it
then you should consider acquiring Boveda 59% or 62% so to bring humidity within cured jar(s) back down after opening to pull a bud out.
The packs aren't going to pull moisture out if they're already full though. The packs can only hold so much. They'll do absolutely nothing if they're full except release moisture if the RH in their environment is below their stated %
Although you CAN suck moisture out of buds if you have a dried out pack or one that's semi dry. You'll feel little rocky clusters inside of the packs. I had a completely dried out pack and chucked it in a jar with a bunch of chunky wet popcorn. It pulled moisture out of them over the span of several days.
It'd be best if OP gets them down to the desired RH beforehand.
Boveda is for storage and not drying by default. I've seen many people rant here because they tossed buds that were too wet in a jar with Boveda and ended up with mold. Thinking it was some sort of miracle pouch and whatnot. They just see 2 way control but don't bother to research exactly how that works. Or even read the instructions.
A brand new pack straight out of the box will do absolutely nothing though on buds that are too wet.