Agav the Gemara there in Gittin says clearly while there is a chazaka a person is living NOW there is no chazaka that he will stay alive (שמא מת לא חיישנין שמא ימות חיישינן)
Agav the Gemara there in Gittin says clearly while there is a chazaka a person is living NOW there is no chazaka that he will stay alive (שמא מת לא חיישנין שמא ימות חיישינן)