I am planning on revising from 4 pm till 10.30 with breaks every hour or so daily for my mocks in June. Is this too much? Will it be not as effective as revising every day for a less amount of time?
Seems like a crazy amount, don't revise to the point that you're about to murder yourself. Remember, GCSEs are still a couple months away so no need to go too crazy on revision. Tbh though I revise 2 subjects a day (1 hour and 30 minutes each) and all my subjects on Saturday(1 hour each) anyways, but at the end of the day you do you and do amounts where you can manage.