Don't despair! Not everyone adjusts to a new guitar quickly, and the greater the physical differences, the more disorienting it can be. If you are very physically oriented in your playing, depending primarily on your motor cortex programming (often called "muscle memory"), you may find it will take a while to "index" yourself into the new positions your fingers must find.
To have both the string spacing and the fret distances changed can be challenging. If you have checked that the set up is good (as recommended by Kent and Steve), I would recommend that you help retrain your motor cortex by playing the two octave C scale pattern, then moving the pattern up by one fret all the way up to the 12th fret --just before you go to bed
. Play slowly and accurately, looking at your hands.
Then, go off to bed and have a good night's sleep.
Your brain will be processing the changes to the motor cortex programming while you are asleep. Do this every night for a week and then let us know how things are going.
You will adjust.... it takes people varying amounts of time and you have to be patient with yourself and think of this as an interesting exploration into how you process physical changes. It may be of use in the future.
When the sun shines, bask.
Classical Guitar forever!