Yes you can but depends on the condition of the patients. Recommended time is 1 hour to 2 hours. Some age difference also be considered.
Wearing a wig longer time after chemo gives you headache
Start wearing a wig with recommended timings. Once you practice and be in your habit then you can increase the timings 2 hours to 4 hours and so on. Do not use for 12 hours for very first time to use a wig. It can give you the severe headache.