in short, yes.
however, that depends on how good you are at chemistry and how much you've been paying attention in lessons. if you've completed your notes and engaged with the study material. do module 3 in the first day, including the physical chemistry bit, organic chemistry the next day, and then on the third day, revise module 2 and do past papers. it should be fairly easy.
on the first day, if you're doing OCR, start with enthalpy changes, rates, and equilibrium. then, proceed to the periodic table sections but make sure to revise the qualitative analysis really well. do past paper questions alongside your revision. spend time on the calculations. it might take you 5-8 hours to get a good grip over the material (on the level of maybe an A* or an A). take breaks in the middle. drink water, go for a walk, take a power nap, get some coffee, eat an apple or a banana, and make sure to have slept well the night before. then sleep really well on the night too. tomorrow is going to be a big day with lots of more revision.
on the next day, start revising organic from the beginning because all the topics build on the ones before, make a summary list of all the reactions to revise. practice with past papers. focus on six mark questions, mechanisms, and synthesis maps. take breaks and do what i said earlier.
on the third day, revise the module 2 content - it should take you about 2 hours if you're at a good pace. after that, straight to full past papers. do one properly. then go through about 3. that should take you about 2 hours too. it'll then be time for last minute revision: go over your organic reactions summary list and any summary notes you made while revising the other topics.
hope i helped. let me know how your mock goes
