You will end up completely finishing systems in about 2 weeks during Phase I. It goes fast. Like really fast. You won’t be expected to know boldface/ops limits until you hit Phase II (T-6 flightline) around a month into UPT. You can try to find the most up to date T-6 Boldface/Ops Limits before you get down there, but outside of that, there’s really no amount of studying that’s gonna help or get you ahead. Definitely know them cold, verbatim, commas and all by Phase II/Day 1 and make sure the rest of your class does too. It will get you out of blues and into flight suits.
Once you get your pubs, you can start making your way through the contact portion of the 11-248 and keep your nose in the -1. I would also focus on the 11-2T-6 v3, especially Laughlin’s Sup to the v3.
Be prepared to feel overwhelmed, but just keep taking bites out of the elephant. Focused studying is way better than just sitting down and trying to read the entirety of the mountain of pubs.
Let me know if you have any questions! Best of luck!