We all have love/hate relationship with pred. The love is pred is rocketship fast in clearing the worst of our UC symptoms. The hate is pred has numerous temporary side effects that make us crazy.
If you're flaring badly then pred is needed. When I was having 25+ bms a day, nearly incontinent, and having knife-stabbing pains then pred was an easy decision to make and I gladly took them.
However, if you are having a mild or slightly moderate flare, then you can always try without pred at first, and see if you can get by without it 1st. Or at least try 90% topical varieties, such as Uceris or steroid enemas. When all I'm experiencing is a little blood on tp and nothing else, then upping the mesalamine oral/rectal to maximum dosages are often enough.
Pred is great when used appropriately. You don't want to pop the devil's Tic Tacs unless you truly need them though, as there's always a price to pay