Yer first year, right? (Checks thread title. Yeah. Ok.)
Meeting with professors is always a no-lose move, so yeah, definitely a good move.
But .... give yourself some time. You just started, and you've only got a couple months done. My study partner is a super smart person doing mixed animal who has large and small experience and who routinely rocks exams. She really struggled in her first semester and was in that "sitting on a D going into the final" situation more than once and was, as I understand it, really concerned about not being able to manage it. Now she cruises right along and I doubt she's gotten a C in two or three semesters and probably rolls in with a 3.2-3.5 every semester, which is perfectly fine. I know another person in our class who was in a similar position first semester; pulling D's and thinking she was going to fail out of vet school. She's still with us, and as best I can tell, doing just fine.
Some people just take some time to adapt.
I'm not saying ignore a problem if you're in academic peril, but at the same time, don't beat yourself up and start thinking you're not good enough. Take some deep breaths, focus on doing what you have to do, know that you're good enough and smart enough to get it done, and give yourself a chance to acclimate and settle in. You'll find your routine eventually.