The most important thing is to start consistently, not the amount of Bitcoin. To start any investment, you should first have money, sufficient knowledge, or absolutely perfect market conditions.
You don't need to understand everything about Bitcoin before you invest in Bitcoin, and you don't need to start your investment in absolutely perfect market conditions because Bitcoin is highly volatile, and you don't know when the market will be favourable for you to start your Bitcoin investment. If you have a source of income that guarantees you discretionary income, you can adopt the DCA strategy and start your bitcoin investment weekly or monthly based on the one that is convenient for you, and you need to set aside your backup funds or emergency funds. In case you have any emergency you didn't plan for, you can depend on your backup funds or emergency funds to solve your emergency, and it will not influence you to sell your bitcoin.
The only time we can say there is an absolutely perfect market condition is when there is Dip else there is nothing of such especially for an Investor because their target is always long term investment and so using the word absolutely perfect market condition seems like a trading term because as an investor you don't really need this because the dollar cost averaging is always there to buy at any time regardless of the market condition. And don't complicate or mistake back up funds to emergency funds because they both have different task even though they are both used to solve problems but the problems they solve differs.
Sometimes as an investor, if I think that a dip is a perfect market condition then that might absolutely not be true, Because all I can do for myself is to keep accumulating consistently and buying and stacking bitcoin on a regular basis not considering when there is a dip, because we can’t tell how long a dip is going to last when it comes, but you might still find out their are people who might still not buy bitcoin during the dip, probably they lack a discretionary income at that moment to accumulate during a dip, perhaps there are investors who might want to make different efforts to have a discretionary income to make an opportunity for them during a dip and I know some guys who doesn’t care about accumulating during a dip because they can also accumulate their bitcoin with DCA at any given time frame.
However there might be some investors who would want to have a strategy of saving fiat comfortable to them considering when there would be a dip to take the opportunity to accumulate more bitcoin, which I think is also not a bad idea for them to save money to buy when there is a dip, but that still wouldn’t stop them from buying accumulating on a regular consistent basis not even considering the price of the bitcoin commodity in general and what the price of bitcoin.
Not everyone would see a dip as a perfect market condition to invest and to continue accumulating bitcoin because they’re well aware of Buying through the DCA method which is quite favorable to them.