So Luna is 3 months on the first, she has sit down to around 80% down is still working and recall is well at a goose egg now before she would come now she looks at me and will ignore me. she walks on a leash fine she is starting to pull a little so i want to start teaching heel. My question i have been told do not make lesson long around 2 to 3 mins long is what i do them at right now, but how man do i do, also can i switch up the training one lesson is downing 2 mins switch to sitting, then switch to following? i am struggling i feel like i am lost in a HUGE sea. also i was told to minimize her play time with my other dog because she will start putting that before me, which yes i have seen.