Can I divide the 8 hours to two sets of four hours?

Hi! I´m about to embark on protocol 1000 but my schedule prohibits me from doing it in 8 consecutive hours. You think it could be ok w divide the hours into two sets of four hours? Lets say 4 hours in the morning between 9-12 AM and the next session between 4-7 PM? Thank you for input!

Sure, you could divide the 8 hours into 2 sessions.

You could do but it may be less effective.