The area of support can be changing to resistance if the price keep down, to minimize the risk is better use stop loss so we can buy again in another lower of support area and we get more amount of coins. Use stop loss by 6% is good, so if the price keep down more than 6% we can buy again at the bottom price.
That's a good strategy.
I've seen someone said similar strategy of buying the support and buying again if it's drop a little from that support that you've set. But if there's no more budget left to buy.
HODL.
Thats called cost averaging or average down on forex where you would be buying out into those dips as you would able to recover on what you had lost on the peak price but actually this method is indeed very risky and very capital consuming and if you dont have sufficient funds then you would surely fall short.
When you do deal up with crypto then you should really prepare yourself into these kind of events where price could really shoot down after you had bought which would really be ending up for you to be hodling.
You cant determine on when would be the recovery because this market is always been unpredictable.