Filing in two states but only lived in one of those for 2 months

We are trying to file our taxes and have two states to enter in (PA and DE). We only lived in PA for two months, however, it is showing that we owe for a full twelve months. The biggest area of concern is for our two home office expenses (ESL tutor and another for working from home full-time). We have very few expenses for the two months of being PA residents and would really like to keep that portion to a minimum, if we can. Any advice is welcome. Thank you!