I worked as a solopreneur for 2 years alongwith my MBA in Marketing, then a year in IT Software Testing,Sales before getting into teaching Marketing. I would advise you to delegate your work on Freelancer.com and hire VA's. Talking about getting more work, it's simple ask for referrals. I could get same clients give me more clients, as them, try email marketing to your old clients, it works, also if they are on social media, connect with them, they would surely give you more clients. Next approach would be having a website of your own, where people could see your previous work. My website generated more than 75% of my total revenue.If you need a step by step plan as a proposal, let me know, we could discuss on the call. I had been into freelance since long!
Thanks,
Abhilekh