- do you have any survival tips during war period?
if you are not in the country involved in the war, then you just go with your daily lives.  If you live in that country, then you need to be aware of the daily news and act accordingly.

- are there any business that I can do during a period of war so as to sustain my family? Can I still budget, save and earn in Bitcoin?
Learn the major product of the countries involved in the war and avoid that like a plague.

- What is the economic impacts on individuals with families and how do I sustain them during war period.
Prices of goods from the war inflicted countries will rise up because the supply will go down.  Hence, better make preparations of seeking cheaper alternatives of that goods.