There are SO many things that can make you need more insulin. Activity level, stress, hormones in general, seasons and many other things can affect your insulin needs. If you're newly diagnosed then maybe the honeymoon is ending.
I'm currently hit really hard by summer temperatures, and constantly lowering my insulin doses at the moment, and fighting off hypos and general lows several times every day

My pump basal is currently running on 80% of the usual basal, and STILL have had 2 hypos today

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22 years old, diagnosed T1D on october 14th 2004.
On MDI, Novorapid and Levemir, using the NP4
Currently back to pumping with my IR1200, April 2008.
Been using D-tron and Animas IR1200 but prefer the pen