family visit visa is approved for either 3 months or max. 6 months. initially they issue visa for 1 month. when the person enters doha, within 1 month he/she has to undergo the medical check-up at medical comm. in abu hamour. then go with the result to immigration and they will extend the visa for another 2 months (in case of 3 months approval) or 5 months max. if u r lucky enough, u can try and get few more days/weeks extn. after that. best of luck