You cannot depend only on income from signature campaign for living and if you are doing it the you are putting your life at huge risk as there is full possibility that signature campaign will disappear in future and you would be having no source of income so its always good to to have multiple sources of earning money.
We are talking of steady income here and we all know signature is not steady and for me it's not even a good amount of income to be used for our needs to survive. People must understand that it is only small value of money given as reward and it's suppose not to be taken seriously as a money making activity because you might feel comfortable and will miss the most important thing that will give you a real decent income.
maybe i can give suggest to get steady income with working in many section in offline or online world, because if we can make one source as our income then we can have opportunity with other source and we can earn more money. so i think you should open your mind to receive every positive work so you can start to make money and finally you can have steady income for your life.
By combining different source of income, I think it would help.. Just make sure you were able to manage your time in your day
job and your online job.