There's a lot of past discussions on this topic you can research and read, if interested. Just one of the annoying puppy stages. Taco will eventually stop but you have to train him on how to play. He's playing. The biting does last several months. More than you'll like. Herding, nipping at shoes, feet, ankles is typical. Distractions help.
This is where an ex-pen is a life saver or sanity saver. You'll learn saying "No" or "Stop" will only encourage Taco to keep what he's doing ...playing. Words don't work at this age.
You can try Yelping (Owwww!) like dogs do to each, which says that hurts ... Stop! I'm not playing with you anymore. Then remove and put Taco in Time Out in an ex-pen. Just for a few minutes or seconds. Let him out. If he continues, without saying anything put him back in Time Out.
You're not only teaching Taco how to play, but also how to mouth and not bite. My "puppy" turned one year old this month. She still mouths sometimes when we are playing with her. I've accidentally hurt her when combing her hair, she reacted by putting her mouth on my hand but does not bite. Because, she's learned not to bite.
My ex-pen was in a family-kitchen area. During Time Outs, although, Patti was confined, she was in the same room with the family. I no longer have the ex-pen up but have a crate in our bedroom. Every once in a while when Patti becomes annoying and won't stop, I use the crate as a Time Out for a few seconds or minutes.
I prefer Elk Horns for Patti to naw on. She likes the splits ones and eats the marrow. She also likes the ones that aren't split. Right now Taco is a soft chewer and can't eat the marrow, but he can naw on the Elk Bone. When Patti was 3 months I gave her one of those thin sticks with peanut butter or chicken. She was able to eat it and got a piece stuck in her throat ending up at the Vet. A scary experience.
I don't like Bully Sticks because their icky, sticky and stinky and Patti eats them. However, they are soft and Taco probably can't eat them right now. Some people use pigs ears to get through the biting stage. They're more icky than bully sticks. But when you're desperate ... at this stage you resort to things you won't do later.
Things get better around 9 months.