Totally doable — but it depends on what you mean by 'realistically.' If you're aiming for a convincing, proportional figure that reads as a person rather than a stick-figure, you can make dramatic progress in a few weeks with focused practice. I’d break it into a few clear goals: proportions and gesture, basic construction (spheres, cylinders, boxes), simplified
anatomy, and values/lighting to sell form. Hit each goal with short, intense sessions and a few longer drawing marathons on weekends.
Start with gesture warm-ups: 1–2 minute quick poses, 30 of them, every session. Then spend time on constructive anatomy—learning the ribcage, pelvis, and limb masses as simple shapes. I used references like 'Figure Drawing for All It's Worth' and video lessons from 'Proko' when I wanted clear demos. Also flip through 'Drawing on the Right Side of the Brain' for exercises that sharpen observation. Mix life drawing (if possible), photo reference, and mirrored self-portraits. Don’t chase details; focus on the underlying structure that makes a pose believable.
Finally, be intentional about feedback: compare early and later sketches, use overlays to check proportions, and occasionally slow down to one-hour studies where you render form and light. In a few weeks you might not be Michelangelo, but you will see your figures hold together and feel alive. That jump in confidence is addicting — keep that momentum and it’ll only get better.