no it is not safe unless hbsag is less than 10-100iu/ml and even in this case it is dangerous and must be monitored.this is 99,9% not your case hbsag is never so low
stopping it is useless and dangerous, tdf makes nothing to the infection it only lowers hbv replication to very low levels to avoid liver damage, the infection might be cleared by 17-20 years on tdf for some
What is the level of your hbvdna now ? liver enzymes, altrasound .... why do you want stop it ? is your kidney touched?