I’m not an attorney but I would say yes, you can. I’d probably wait a little longer to have a couple of pay stubs under my belt ( and also a letter of employment verification). But please keep in mind that while this should be sufficient, the final say is with USCIS adjudicating officer. If he still deems this isn’t good enough, the case may be denied. This is why we recommend a well-qualified joint sponsor in addition, if you are able to find one.