Yes, you can skip to the other sections and return to the W-2 income later if you wish. You can say you're finished with the W-2s and click Done. Then, go to Deductions and Credits or other income sections.
What may be easier for you is to sign out. TurboTax Online automatically saves your work as you go through the interview. When you sign back in, you'll be given an option to "Pick up where you left off" or you can then choose wherever you want to work on next.
Note: One caveat, as a best practices, you should try to finish your entire Federal return before transferring and moving onto any state returns. State returns pull their information from the Federal, so you want that information to be complete or you may have to go back through your state return twice.
Please feel free to post any additional details or questions in the comment section.
Here's how to get back to the W-2 section: