How much savings is enough? Is $350/$850 enough or am i supposed to be doing more?

You're already saving a lot for the amount you earn. Good job.

But there's only so much you can save from a certain amount of income. Earn $2k, save 100% = $2k. Earn $10k, save 20% = $2k. One is compatible with life, the other is not..

So the next step would be to increase your income. Life is meant to be enjoyed. Spend within your means, but increase those means so that you can enjoy life.

I think that's crazy savings you have in terms of percentage. Well done! I think the next step is to see how to improve your total earnings. Savings = earnings - expenses. I think you've shown yourself to keep your expenses low, so the next logical step is to try to improve your earnings!