You can't do it all. You're prioritising relationships, which isn't a bad thing. But maybe you need some balance between that and the opposite of staying home cleaning non-stop and never going out. Find the middle ground.
Most people wouldn't have chosen a special day out with a 3hr traveling time all round, when they're behind on studying. Ditto dog/house/ babysitting and helping people move. Most would have arranged the beach visit for eg next month and said no to the requested favours, if the college course was hugely important to them. Those are all services someone could pay for, is failing your course worth it to save someone else spending their money? Its obviously not quite that simple and is also tied in with how helpful these people are to you and whether you owed them a favour, as well as their own life circumstances and whether these favours were emergencies etc. I'm not saying you chose wrong, only to think carefully what your priorities are and ensure you're acting in accordance with that.
Think about what you want most from life, you can't have it all, unless you're happy to have it all done to 60% standard. If you want higher standards you need to decide what to drop. Whether that's temporarily dropping something whilst you make time for some other temporary thing, or permanently dropping it because it doesn't fit in with this stage of your life. Reading another thread, I think this could be a reason some people don't have friends! It's not important enough to them to make the time to socialise.
One thing you could do if you don't already is to dress in clothes suitable for exercising all the time, so you're not having to get changed to exercise.
Do you have a playpen? No harm in using one for half hour so you can get something done without needing eyes in the back of your head.
If the wash basket is full I always put it in the machine with powder the night before (I notice its full when I drop my clothes in there before bed) along with powder and set it, so in the morning I just press start. In the morning when I wake and head into the bathroom I take fresh pyjamas with me ready for the night. In the evening I choose clothes for the next day and take them to the bathroom while the bath is running, so no thinking what to wear in the morning.
I pile things in a basket on the stairs top and bottom, if they need to go up or down. Then when I do head up or down I grab something and put it away where it belongs. The basket might not often be completely empty but it's never overflowing either. It's a constant work-in-progress.
I'll never head into the kitchen without looking round the room I'm in for anything that needs to go to the kitchen.
I clean weekly and if something gets dirty I tell myself it's not so bad, it was cleaned X days ago and will be cleaned again in X days time. That stops life becoming all about cleaning and nothing else.