This is a very common thing to happpen and theres only one way to get round it... Its to keep playing im afraid. Yes, you may have grown some calluses but belive me it will get stronger and stronger through playing, so in my eyes just look it like its proof your working hard and keep up the good work. To add to that, if your looking to train your fingers thurther, try something out of your comfort zone to really challange you and keep playing till your blue in the face.

P.S: I hope you found this usefull and dont stop rocking!!! :p