Can I use the values from a form in other form with Django?

I have a Django app with two forms where the views.py looks like this:

import pandas as pd
import numpy as np
from django.contrib.auth.decorators import login_required
from django.shortcuts import render
from django.template.response import TemplateResponse
from pbmcalculator.models import PbmCalculator, simulator
from django.core.cache import cache   
import json

@login_required
 

def subs_calc(request):
    
    # this is from the first form #

    selection = request.GET.get("id", None)
    customer = request.GET.get("customer", None)
    initial_date = request.GET.get("initial_date", None)
    final_date = request.GET.get("final_date", None)
    

    if selection is not None and 'initial_date' in request.GET:
        calculation_target = PbmCalculator(customer, initial_date, final_date)
        html = TemplateResponse(
            request,
            "pbmcalculator/table.html",
            {
                some operations
            },
            )
        
        return html 
    
   
    if 'generico_sim' in request.GET:
        
        # this is from the second form #

        brand_sim = request.GET.get("brand_sim",None)
        generico_sim = request.GET.get("generico_sim",None)
        marca_sim = request.GET.get("marca_sim",None)
        initial_date_sim = '2021-08-08'
        final_date_sim = '2021-08-15'        

        calculation_sim = simulator(brand_sim, initial_date_sim, final_date_sim)
        html = TemplateResponse(
            request,
            "pbmcalculator/table1.html",
            {
               some operations
            },
            )
        return html

    return render(request, "pbmcalculator/subs_calc.html", {"selected": False})

So I want to use the variables initial_date and final_date in the second if statement to fill the initial_date_sim and final_date_sim. I tried several ways but none worked. Some idea?

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