Peace,
The Quran provides no explicit number of circuits required.
[1]However in my humble view, it is useful to acknowledge that the current practice of 7 or even more
(in remembrance of God) is not incongruent with the Quran’s overarching teachings. Also one circuit close to the Ka’aba is not the same as a circuit completed at the outermost boundaries of the Ka'aba's precinct. Arguably, the intentions will remain paramount with the Quranic proviso
“to keep your duty to God as best you can / what you are able... (Arabic: ma is’tata’tum)”Given the above and personally, I have not found any cogent reason to breach the current practice if I am able to fulfil it. Completing more or less circuits would be a matter of choice given the circumstances presented at the time.
I hope this helps, God willing
Regards,
Joseph
REFERENCES:[1] THE SEVEN CIRCUITS OF THE KA'ABAhttp://quransmessage.com/articles/seven%20circuits%20FM3.htm[2] DO THE BEST YOU CAN WITH SINCERITYhttp://quransmessage.com/articles/best%20you%20can%20FM3.htm