Remicade, Tremfya and Prednisone

I am curious to get some input on other people experiences.(its a long story so bare with me) I was on Remicade for almost 2 years and had decent results on the symptom side, but very difficult side effects, which combined with a good flare made my Dr and I decide to make a move to Tremfya. Since I was in a full flare, we used Prednisone during the conversion. The combination and conversion to Tremfya went pretty well other than I needed to stay on some level of Prednisone for almost 4 months. (there were small periods of days that I was off, but we are talking days) Anyways, now fully on Tremfya for 8 weeks and once I came off the prednisone taper at 5mg, I got sick with a huge # of symptoms ranging from headache, nausea, bloat, shakiness, flush feeling, sleep disturbances, anxiety, and a rash. This has been going on for almost 2 weeks. My cortisone levels looked normal and my Dr said sometimes its a bit rough coming off the steroids as they are like a "superman" drug. I know my immune system has been in a huge state of change between being on steroids and 2 different biologics, but 2 weeks of these symptoms has me very down. So couple questions. I have read the "prednisone withdrawal" period can linger from days to weeks. Has anyone experienced this? Regarding Tremfya, all info seems to show very few and mild side effects, but what is the likelihood that the Tremfya is causing this? My UC is doing great, but to add to it all, I just got a small respiratory virus over the last couple days. September is not off to a great start. I am looking to find certainty and light at the end of the tunnel. Thank you for any inputs.