Experiment revising in a few different places to decide what you prefer, usually a quiet area in your home is best but some people prefer to head to the library to avoid distractions at home. I prefer to be alone but others prefer working next to others revising to make you feel bad if you stop, its all about your choice!
Then even if its in house, set an alarm for a reasonable time (I’d say 9/9.30) and make sure you get up and dressed, revising in pjs sounds a lovely idea but I find getting up, dressed and washing my face makes me feel awake and prepared and therefore the day is much more productive.
Set yourself targets and be organised but don’t spend too much time doing this! If you have 5 exams in 3 weeks write a schedule of what you’ll do each day taking into account the hardness of each subject and which order the exams are in.
I always find rewriting notes onto other pages and/or highlighting much better than simply reading which often doesn’t go in, especially if there’s any diagrams involved. Writing the most important bits on flashcards also helps and googleing things or reading a different book to see another way of it is written which can help information sink in and understand it better.