any tips for time managing 3 exams in one sitting?

There are two options
Whether apportion your time in weekly basic one full week for subject 1 ,second full week for 2 subject and third week for 3 subject or do on hourly basis 2 hours in morning for subject 1 then take a break and go for 2nd subject for 2 more hours and then for the 3rd one or daily basis 1 subject every day
so finish subject 1 on first day
2nd subject on 2nd day
and 3rd subject 3rd day
but the best option is hourly basis do it every day
small portion of each subject it will help you more and its the easy way and for revision go for weekly basis

I studied F1,F2, and F3 at once. I did it by self study; I bought the BBP texts and the GTG texts to get two different perspectives on the topics. Then I had two study sessions per day, in the afternoon I studied one chapter from each of the GTG texts with a short break between each topic and the repeated the tactic in the evening with the BPP texts. I passed 60+ in all three so the tactic worked for me.

Practice is the key, remember the adage. “I read and I forget, I listen and I learn, I do and I understand”. The tactic I’m using for the practice is similar to the studying, two to three different topics from each subject per session and two sessions per day until I’ve covered the whole book/syllabus. I’m supplementing this by going over the topics that day practiced that day in the study text and lectures.

I’ll know if it worked in February 🙂