Sure it is! As long as you create a transition that allows your reader to understand that your characters are now about 2 months from where you left off. For Example: Your character is in school, they feel overwhelmed with the course load, or they are being harassed by classmates...something has happened...and you end the chapter with them laying on the bed bawling or going to see their adviser about dropping some classes... Now we are 2 months from that event.... Jeri, stretched and yawned as she closed her history book and thought about getting a snack. She grinned realizing that two months ago she would have been ready to pull her hair out, with the impossible number of classes she had been trying to pass. Marbles, the big orange cat, who was the best roommate ever, jumped off of the cat tree and followed her into the kitchen, a loud meow-prrrr indicating he would also appreciate something in his cat bowl. It was only 10:00, Jeri realized with glee! No more early, six-thirty morning classes to try and race to clear across town. "I can even watch at least part of a movie tonight. Hmmmm, popcorn, I think; and you want something too, eh Marbles? Boy am I glad I decided to drop those two classes, that was just too much added to working four days a week!"

yeah, that way you can just tie the chapters together with awesomeness.

Technically it's acceptable, but it can be seen as a lazy move if you don't create a good transition between the time periods. But you can create a bridge by describing an object or person that a character mentioned in the first few chapters.

If I'm going to have a time jump early on I tend to put it between the prologue and chapter 1.