I chose to expirement and try luck with trading and freelancing, if there is no success with any for september, I will choose full-time job.
This span you have chosen is very small to see whether he can succeed or not because Trading needs time and attention you need to read learn and analyse and keep reading markets.
Can I learn and do trading for month to make at least some money(around $100-$250), while doing freelance programming? I can arrange 3-5 hours for each activity per day
This is very hard to predict as it completely depends on your skills and efforts.
So he was supposed to make profits in short term alone,not sure he did that or not but the time frame he said was ended.
Myself it is surely possible to make profits in short term but learning complete crypto trading may not be possible.
We have to be careful with fundamental of trading to make money and we can keep learning the strategies and try it will less capital from the total capital we got for trading.
Excatly, it is possible to earn trading in a short time however the problem is that you must learn first the fundamentals and get some experience. If you just enter the industry without knowing nothing then I'd say that all of your capital will be in vain. By looking for the given time frame I think it you are still in the learning stage so it would be impossible for you to earn that quickly.