HTTP2 Loadbalancing to HTTP1.1

Hi there, I am using traefik as ingress controller on kubernetes.
I have got a small problem.
My helm is this

kind: Ingress
apiVersion: networking.k8s.io/v1
metadata:
  name: {{ .Values.Ingress.name }}
  {{- if .Values.Ingress.middlewares }}
  {{- $middlewares := list }}
  {{- range $middleware := .Values.Ingress.middlewares }}
   {{- $middleware := print $.Values.Namespace.name "-" $middleware "@kubernetescrd"  }}
   {{- $middlewares = append $middlewares $middleware  }}
  {{- end}}
  annotations:
    "traefik.ingress.kubernetes.io/router.middlewares": {{ $middlewares | join ", "  }}
  {{- end}}
spec:
  tls:
    {{- if .Values.Ingress.tls_secret }}
    {{- range .Values.Ingress.hosts }}
    - hosts:
      - {{ .hostname }}
      secretName: {{ $.Values.Ingress.tls_secret }}
    {{- end}} {{- end}}
  rules:
  {{- range .Values.Ingress.hosts }}
  - host: {{ .hostname }}
    http:
      paths:
      - backend:
          service:
            name: {{ .forwardhost }}
            port:
              number: {{ .forwardport }}
        path: /
        pathType: Prefix
  {{- end}}

However there is a problem.
Configuring this way does not properly handle http/2 requests to http/1.1 backend.
Because it does not distribute the traffic(http/2 uses multiple requests in one TCP/TLS connection while http/1.1 uses multiple connections for multiple requests).
The problem is that the traefik makes one http/1.1 connection and passes from http/2 to http/1.1.
This method works but it is extremely slow.
Let me show you like this:
HTTP1.1


Using HTTP/2

In this case, when client uses http/1.1, it makes multiple connections.
But http/2 does not do that at all.
Could you help me solve this?
Thank you