I'd say that if you already have tech experience, like with the year long program you took, try to get into tech support somewhere. You won't need A+ if you already have that kind of background. When I got my tech support job, I didn't have anything, but I could do basic troubleshooting.
Here's what you actually need to be able to do to be good at tech support:
Its amazing how many people don't understand that electrical things need electricity.
This blew my god damn mind when I got hired. I thought it was a joke. It was not. 85% of my job was telling people to unplug their router and plug it back in.
That's it.
You might think I'm kidding. I am not. For Tier 1 Tech Support, that is most of your job. Electronics need electricity. Rebooting solves most problems.
Everything else you'll learn on the job. If you can, try to get in with a local ISP. You'll learn to troubleshoot TV, Phone, and Internet. If you live in a small town, like I did, you might very well learn to troubleshoot literally everything. People thought we were the damn power company.
I haven't personally tried A+, but I passed net and security in the last few weeks, and net involved a lot of memorization of things like wires and speeds and other things you don't really have to know. I suspect is probably the same with A+.
Try working through the Exam Compass tests, and when you come across something you're not really certain of, spend time studying that specific thing. No need to re-study everything.
You might also try this. I used the passport books for net and security. They come with a bunch of practice test questions which really help. Focus on practice tests. Its far more effective than just reading. It's probably the reason you got a higher score the second time without studying, because taking the test the first time sort of counts as studying.
For studying, work on 1-3 chapters a day. Do the practice questions at the end of the chapter, then do the digital questions for the chapter. At the end of the day, do a set of questions from all the chapters you covered. At the end of the week, do the same for all chapters you covered that week.
And make sure to take a break between chapters. The time you spend not studying is as important as the time you take to study.