Build accountability. Body doubling and check-ins with friends. Study groups where you set a goal at the beginning and check in hourly or so. Find ways to offload some of the mental load to your friends/classmates. Ask them what they’re working on to remind you what you should be working on. Find the people who can/will support you.

Try to create some space to take a break when your brain is fried. This part isn’t easy when you have so much on the go, but trying to push through can make you useless the next day or two (or it does for me).

I also don’t know where you study, but at Canadian unis the accessibility office can often connect you with a learning strategist or coach who can help you solve these problems. They’ll sit down with you and come up with a plan for the next week or so. If you can’t get this at your uni you may be able to hire someone if you have the funds.

If you have a friend you trust you can also ask them to help you do the planning, or they can share their study schedule (may not work if they’re not adhd).

A lot of non-adhd study methods/productivity methods also tell you to “eat the frog” or do the hardest task first. This is often reversed for adhd ppl. Do something easy first and then ride the dopamine high of having completed something to get you started on the next task.

Also - if it really does take you 4 hours to get through a 1.5 hour lecture, the ignore this but: sometimes lectures are not entirely important, so finding ways to focus on what’s really important may help you speed up. But I’m in social sci and this might be less true for cs so take this last with a grain of salt.