As someone who found out that I have ADHD later in life, this is relatable. Though it can be a combination of hyperfocus and executive dysfunction I use "task inertia" to describe what it can be like. If my brain doesn't want to start on a task, it takes no less than the panic of imminent crisis to get it to start on that task. Other times, I can get lost in something and "just one more thing..." myself until I realize the level of daylight has suddenly changed outside and I'm hungry, thirsty and in immediate need of the bathroom. Yes, the classic is doomscrolling or video games - But those are often a result of not being able to start something else that I should, and especially in the case of doomscrolling, feeling guilty about doing anything substantial that isn't the task at-hand. I've been known to get just as entirely-absorbed in data entry as in the classic video games example, once the ball got rolling.

Instagram, and other social media, is designed to be addictive. study/homework is not. Don't be hard on yourself d for falling for the app-trap. This is where discipline can take hold. of course, getting that self discipline is a monster of a boring task. Maybe start by setting some alarms to schedule the study time. during that time, put the phone/tablet away and limit computer work to the study only. It is difficult. You can do it.

It happens to everyone. Don't be too hard on yourself. Make a schedule. 20 mins of study, then 5 mins of scrolling. Get up, have water,maybe a snack, then 30 mins of study, then 5 mins of doomscrolling and water. Good Luck.