My Anna was similar. She slept very short and in addition to that she wanted to nurse often. We were on 2-2.5 hour cycle for the first 4 or 5 months. I am of the opionion that you do what works for you and your baby. As long as you don't feed him to sleep it doesn't matter how long is his EASY cycle. Anna naturally stretched her feedings around 5 months of age and it also got easier later when she started solids.
The only tip I have to extend time between nursings is to get out of the house, have your lo in a sling or baby carrier, that way he is comfortable and close to you and also entertained, so he will forget to nurse. That worked for us, Anna would usually fall asleep in it after a while but she also napped there longer and I was getting ME time, so I could go shopping or walking, enjoy it and still have her with me.