You don’t need to sterilise any of it, you only sterilise items that contain formula for 12 months.
I was told I don't need to sterilise plates, cups and utensils. But I didn't start weaning until mine was just after 6 months because she couldn't sit with minimal assistance and I didn't want to risk chocking
Hey I’m no expert but I started weening at 4 months, I would say only sterilise what bubba puts in mouth. They say you can stop sterilising at 6months - you’re almost there!! Good luck x