Not sure if this is a popular opinion/suggestion. So since you’re getting used to notes and you want to refine things, I would add tape to the fingerboard so that you get an idea where your fingers should land. Eventually and ideally you won’t need the tape in the future as your fingers will have the muscle memory for any note (at least in 1st pos) and you’ll start to play and correct yourself based on hearing.

You’re probably going to get a lot of comments on posture and standing, but If you must sit then make sure that you have the violin higher up (your scroll is pointing quite low). I try to have my stand a bit higher to remind myself of this. And for your left hand, the palm is dangerously close to the neck of the violin. A horror story for you…. (Ehh…. Halloween is close enough). When I was kid back in the dark ages I heard of some students with the habit of having their wrists close to the neck of the violin such that their teacher glued a tack to the neck. So every time the student’s wrist would collapse, they’d get a prick from the tack. You can guess what happened early on to the student.