PEFT How to use DTakai/sft2-lora with PEFT:
from peft import PeftModel
from transformers import AutoModelForCausalLM
base_model = AutoModelForCausalLM.from_pretrained("unsloth/qwen3-4b-instruct-2507-unsloth-bnb-4bit")
model = PeftModel.from_pretrained(base_model, "DTakai/sft2-lora") 
