Dynamically merge fields in helm chart - kubernetes

Question

I'm trying to combine sections of a helm template with sections provided in the values file.
I have this in my template yaml
{{- $name := "test" }}
{{- if hasKey .Values.provisioners $name }}
apiVersion: karpenter.sh/v1alpha5
kind: Provisioner
metadata:
name: test
spec:
providerRef:
name: p2p
labels:
workload: test
limits:
memory: 20
cpu: 16
requirements:
- key: karpenter.k8s.aws/instance-category
operator: In
values:
- t
- m
{{- end }}
and this is my values file:
provisioners:
gp:
limits:
cpu: 75
nvidia.com/gpu: 2
test:
limits:
memory: 10
cpu: 10
requirements:
- key: karpenter.k8s.aws/instance-category
operator: In
values:
- r
This will only install the manifest if there is a "test" section in provisioners. But what I want to do is 'inject' the limits and requirements from the matching provisioners section in the values file or overwrite that value if the item already exists in the template.
One possible complication is that the fields in the values file won't always be static, there can be a number of limits that can be applied so it would need to be able to copy every item that's in that section.
Likewise with the requirements section there can be any number of keys. If there's a matching key value in the values file then it needs to overwrite it otherwise append it
So the resulting template would be this if $name is set to "test"
apiVersion: karpenter.sh/v1alpha5
kind: Provisioner
metadata:
name: test
spec:
providerRef:
name: p2p
labels:
workload: test
limits:
memory: 10
cpu: 10
requirements:
- key: karpenter.k8s.aws/instance-category
operator: In
values:
- r
And the resulting template would be this if $name is set to "gp"
apiVersion: karpenter.sh/v1alpha5
kind: Provisioner
metadata:
name: test
spec:
providerRef:
name: p2p
labels:
workload: test
limits:
memory: 20
cpu: 75
nvidia.com/gpu: 2
requirements:
- key: karpenter.k8s.aws/instance-category
operator: In
values:
- t
- m
I'm hoping someone can point in the right direction of how this can be achieved. I have no idea where to start with this!!!
Thanks in advance