retainers again

i wore my retainer again after months of not wearing them and it still fits! ‘di ko naman siya pinilit so i think that’s a good sign? pinatanggal na kasi sakin before after wearing it for like 2+ years 24/7 since okay na daw but i worry na baka bumalik ulit sa dati yung teeth ko, would it be advisable to wear it nightly nalang? i am planning to get a check-up again soon once sem break starts hehe