This is only my first or second post but not my first time in Sch sport or dog training.
For a newcomer you need to understand the rules of the sport. It's is a rule driven sport just like baseball or football. All take a lot of time to learn what you can do,must do and what is not allowed.
A good example is commands. Correct me if I'm wrong and things have changed but you can't use the dog's name and a command. "Rover, come" is a double command. It costs you points every time. You only have a limited number of " mistakes" per exercise. Simulating food treats in your hands is another. Yet you must use an audible command. My current dog while not Sch trained uses finger, hand, whistle, noise, flashlight, voice and automatic commands.
So ask questions of the group trainer. Spend plenty of time watching and going to trials. I spent about a year doing this and elbowing my way to the front row during critiques. The foreign judges seemed the most friendly and often pointed out the exact faults and good point with pleasant humor while having the very sharpest pencils.
Weather is not necessarily an obstical, lightening will stop field exercises as it should. However a steady rain may not. I trialed twice in a down pour. We practiced in the rain many days. 8-10 hours cold and soaking wet at the time was a test of endurance. Today I laugh about it.
I still have my black knee length tracking boots.
Somebody said they train three days a week. Nice.. you are fortunate. We used to do protection three days and tracking and obedience 3-4 days. I would lay tracks before work in the morning and run them in the evening after work then do obedience under lights. It was a tough schedule.
Anyway stay with it and enjoy working with your dogs.