Ustekinamab biosimilar

Hi all. I’ve have tried every treatment possible going and the only one that worked for me was the 45mg ustekinamab injections. For 9 years I didn’t have 1 dot of psoriasis on my body. Last month I received a letter telling me that I will be moved to a biosimilar product. 4 days passed since I had that injection and my psoriasis has flared back up to what it used to be. I am so angry at this change as it has taken me back to where I started. Has anyone else experienced anything similar?