[1.20.1] Idle animation blending into walk animation

Hi! I'm following Kaupenjoe's guide and making an entity, and I get a problem where two animations mix into one when my entity walks - idle  anim plays together with walking. As I'm pretty new into coding and modding, I don't know everything about what I do following his guide and I'd like to set up animations in specific way:

1. When entity is doing nothing, idle animation plays;

2. When entity is walking, only walk animation is playing

Here's the code for this entity's animations, it only has 2 at the moment. What should I fix here to get the result I need?

    public final AnimationState idleAnimationState = new AnimationState();
    private int idleAnimationTimeout = 0;

    @Override
    public void tick() {
        super.tick();

        if(this.level().isClientSide()){
                setupAnimationStates();
        }
    }

    private void setupAnimationStates() {
        if(this.idleAnimationTimeout <= 0) {
            this.idleAnimationTimeout = this.random.nextInt(40) + 80;
            this.idleAnimationState.start(this.tickCount);
        } else {
            --this.idleAnimationTimeout;
        }
    }

    @Override
    protected  void updateWalkAnimation(float pPartialTick) {
        float f;
        if(this.getPose() == Pose.STANDING) {
            f = Math.min(pPartialTick * 6F, 1f);
        } else {
            f = 0f;
        }

        this.walkAnimation.update(f, 0.2f);
    }

Hopefully I got into right forum topic, I'm not very used to forum posting xDD