How to make a preview page showing form values ​from different pages?

Question

I made a multi-step but I divided it into different pages, for example step1.html, step2.html, step3.html. Each one has a "next" button that saves the information, and serves. When they get to step7 it has to display the information from step1, step2 and so on. It serves as a preview for people to see everything they have written in the previous steps and then they must click to accept, in fact I found this [solution][1] but I don't know how to implement it when I have 7 forms. What can I do?

views.py

class step7(ListView):
    model=Presupuestos
    template_name='Presupuestos/new-estimate-7-preview.html'
    context_object_name='presupuestos'
    queryset=Presupuestos.objects.all()

models.py

class Presupuestos(models.Model):
    cliente= models.ForeignKey(Clientes, on_delete=models.SET_NULL, null=True)
    carro=models.ForeignKey(Carro, on_delete=models.SET_NULL, null=True)
    mano_obra=models.ForeignKey(ManoObra, on_delete=models.SET_NULL, null=True)
    parte=models.ForeignKey(Parte, on_delete=models.SET_NULL, null=True)
    garantia=models.CharField(max_length=255,default=0)
    pago = models.ForeignKey(Pagos, on_delete=models.SET_NULL, null=True)
    foto = models.ForeignKey(Foto, on_delete=models.SET_NULL, null=True)
    tecnicos=models.ForeignKey(Tecnicos, on_delete=models.SET_NULL, null=True)

    #detalle=models.ForeignKey(Detalle, on_delete=models.SET_NULL, null=True)

    def __str__(self):
        return f'{self.cliente} {self.carro}{self.mano_obra} {self.parte}{self.garantia}' \
               f'{self.pago}{self.foto}{self.tecnicos}'

new-estimate-7-preview.py

<div class="invoice-title">
         {% if presupuestos %}
                <h4 class="float-end font-size-16">Estimate #0001 <span class="badge bg-success font-size-12 ms-2">Paid</span></h4>
                     <div class="mb-4">
                           <strong>LOGO</strong>
                     </div>
         {% for presupuesto in presupuestos %}
                <div class="text-muted">
                       <p class="mb-1"><i class="uil uil-envelope-alt me-1"></i> {{presupuesto.cliente.correo}}</p>
                       <p class="mb-1"><i class="uil uil-phone me-1"></i> {{presupuesto.cliente.nombre}}</p>
                 </div>
         {% endfor %}
       {% endif %}
</div>