Full time college only work part-time. Please Help!!!!!!

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Hi, I'm new to Real estate, I just got out of military and currently attend full-time college using GI-Bill so I am collecting around $2k+ for BAH and only working part-time. I've been saving enough for the down payment, but I can use VA loan 0 down also. My plan is to buy a SFH or a duplex for house hacking. The problem here is my income from part-time job is not a lot, and not stable, my BAH is not considered as income. I don't have anyone to Co-Sign, What should I do to get a loan? Is there any strategy for investing as a college student? I really want to invest as soon as possible, but I also want to finish my degree (~4 more years). Should I keep saving and wait until I graduate from college then work full-time and then invest? Please Help