I think that's reasonable because you will definitely have the assumption that your buying point is the best. If I have left this habit, now I feel more comfortable if the price really drops deeper and I just waiting to start buy it. if it's only a few % difference, I'd better wait. than only risking my asset for small percentage.

actually this is a very good opportunity to buy bitcoin because the price of bitcoin is going down, bitcoin in the future has the potential to go up in price so buying bitcoin now is an opportunity to profit in the future as we know bitcoin is very good for storing in the long term. my experience in 2018 buying bitcoins i held for 2 years and i got great profit. I want to repeat those times so I think now is a good opportunity to repeat the times like in 2018.

Since you have bought some of it, then you don't have to feel uncomfortable because you ran out of money now. I understand that when Bitcoin price falls, is always an opportunity to buy more of it. All you have to do now is to be patience, I mean holding your Bitcoin until it eventually hit a higher price.

I think it's better to only buy when there's significant dip, so you can be busy with other important things in your life and don't get too attached to the price . And i would suggest you buy with what you can afford to risk and not to sell unnecessarily ,so we can have lots of regular people scooping up the dips from gamblers and impatient people. You earn in whatever direction the market goes if you know what you're doing.

I think you are a tenacious person and now is the time to be patient. you just have to wait for the results of what you have planted so far and I am sure you will get something very valuable if you patiently wait until everything is as usual.
I really respect you and I hope one day if I have excess capital I will be like

It's an interesting strategy I should admit. I don't know it's really efficient but it's your choice in the end. When it comes to the current situation of the market, things are going on really interestingly. BTC price declined to even 28k but it didn't take long for it to go up to 35k again. Maybe you'd wanna wait for some time before buying again as you said.

Just be cool men! You are doing the right thing, nothing wrong, or nothing to worry about as well. Sometimes we think we can buy it on the dip and we wait for it. But to be honest, if you wait for a lower dip then you can't buy Bitcoin. When Bitcoin starts dump then you may think oh it would go more down. That's how many times I missed buying Bitcoin. So I won't say you are wrong, many institutional investors have been buying Bitcoin in every dip. Do you think they are a fool? I don't think so at all. Since you already bought and there are no new sounds on your hand, means it's time to test your patience. Just don't be panic, your waiting time start now. If you are a good trader, you might take advantage of the volatility, otherwise, just hold.

you should feel happy if it fluctuates because you will feel more uncomfortable if the price will only decrease because you don't have a funds prepared for buying . Fluctuations helps delay the dip and help you accumulate money .
 reserving 1k for a 5k fall seem a lot because I think that 5k fall is not that big enough  . this make your reserve fund run out faster

Get used to fluctuations, OP.
Weren't you paying attention when dips happen and suddenly one miracle day it just surged upwards again?
Get used to it because it is gonna happen a lot when you're into long-term hodling or if you are not really into that, just don't look at the price and now that you mention that you ran out of funds.
Take a chill pill out of crypto.

Lucky are those who got to invest in bitcoin when the price is in dip but this is not only the best time to buy bitcoin, there are still a lot of bearish season to come along the way. So don't feel so bad if you can't make it today because when there are prices dumping, great opportunities also come. I'm sure there are still more dips to come in the next days or months and probably, by that time you can already prepare your funds to buy cheap coins with great potentials.