potty training, 8 month old dachshund

my 8 month old puppy has yet to show any potty training after I’ve worked on keeping her on a schedule, is there any tips for me? We will walk for about 5-10 minutes and she won’t do anything outdoors but as soon as we get back home she will inside.. I’m unsure how to train her at this point I’ve read a bunch of articles, changed up the treats I give her, etc. is it too late to train her?