Different Crank Lengths for Road and Tri-Bike

Hello all! So currently I have 145mm cranks on my triathlon bike and 165mm cranks on my road and gravel bike. In short, is this good or bad? Should I go down to 160mm cranks on the road and gravel bikes? Or even 145mm? I can feel that their is an adjustment period when switching between bikes. I’m not worried about hurting myself, I just want to train as effectively as possible