It depends on you. Usually ppl do all ashtpadees in one sitting. When i started doing sukhmani sahib for tge first time, it took me 2 hours to do the whole paath. So then I would do 1 hour in the morning and 1 in the evining. But soon i got faster now I can do the whole paath in 1 hour 30 minutes. But its up to you, how much time u have. My little sister did 6 ashtpadis every day and she finished the whole paath in 4 days. So its up to you. Its more important that you do it with love, prem, shar