Confused, PIP text message saying they’re looking at my Pip part way through my claim period

Hi there, this is my first time claiming PIP. This afternoon I received the text message from PIP, I’ll included with this discussion. My award period was from 26th May 2022 to 11th March 2025, received a tandard rate for both elements. My circumstances haven’t change in a positive way, become worse, complicated chronic and progressive disease. I haven’t told PIP of deterioration as yet. Is a normal message to get part way through? Or is it a mistake? Has anyone else received this text? Is it a scam message? My partner and I are just in migration onto UC from New style ESA, also first time. He also receives PIP same end date approx but no text message. We had our first meeting last week with UC, we told them my partner cares for me but we haven’t claimed anything for him doing so yet. Could this be what has triggered the text message, I don’t know if either departments  communicate with the other. Any information would be appreciated, cannot find anything to answer online. Going to call them tomorrow morning. Thanks in advance Newbie