A few observations from a decade and a half in the training command:
1) If you are having problems, ask to be scheduled with a reservist. Absolutely no offense to the active duty, but there is a substantial experience difference between a very busy active duty IP who has 400 hours in model and a reservist happy to be there with 4,000 hours. Generally we can pick up trends very quickly.
2) The IP's will bend over backwards to get a motivated, hustling SNA through a sticking point. However, if someone doesn't aeronautically adapt, we will work hard to make sure you get a new designator. Don't feel like you let anyone down - you volunteered and gave it your best shot, it is what it is, and there are plenty of other jobs that are just as important - intel, FAO, cyber, logistics, etc.
3) If you are winging the month you medical is due, under no circumstances get your medical first. GET YOUR WINGS. After that, then go to medical. (not sure if there is a grace period or not).
4) Prior flight time is valuable - even if nothing more than an exposure to course rules and radio communications. I am not sure if SNA's are still stashed at squadrons waiting to go to flight school, but if so, it is a great way to get some free flight time.
5) If you are having problems flying, absolutely crush your brief - that will demonstrate your motivation and determination - and will in turn motivate the IP's to work even harder.
THIS, if you guys pay attention to anything, pay attention to this, particularly #5.
I once inherited an owning who had problems making things click flying, but he was the absolute best briefer i ever encountered. I worked the hardest I ever did as an instructor with him because he went above and beyond the expectation for him showing up prepared, and it we promised students that if they showed up prepared we'd be able to teach them how to fly... in due time he went from me questioning if he'd pass his initial solo to flying hornets now.
I learned to nitpick details of VT flights from the reservists i flew with in the T-34s because they had thousands of hours in it instructing. When it came to the T-6B, there was a little bit of a role reversal when it came to aircraft specific stuff, but after several hundred hours, you're able to predict where students make mistakes (in fact you can brief it to them in the brief).
Depending on flight schedules, reservist may not be sitting around available when you need them (kinda like your local PD), but you'll know who the AD IPs are who put in extra time to help students and those who you need to steer clear off. Theres absolutely no shame in approaching an IP and asking them how to do X, Y or Z and asking when they'll be available to teach it to you (pro-tip: don't wait until the last minute).