If you've a large discretionary income present, it's fine to lump sum since the funds are available. Personally, I wouldn't lump sum with everything at once. I'll like to divide the money into 3 parts, lump sum with the first part, use the second part to increase my aggressiveness in DCA and keep the last part for buying my target dip.
So I did lump sum some time back, but personally I feel now (hindsight?) that splitting the same amount into a DCA would have been a more effective approach.
I bought in Nov '24, as a lumpsum. Then in Jan/Feb I was happy but in Feb we got a bit of a dip - right up until April.
Conversely if I'd done a small amount in Nov, then bought DCA below my last buy price I think I'd have made a bundle more.
You did a good thing by front loading your Bitcoin investment with a lump sum and shouldn't regret why you didn't split the money you used for lump sum into different parts and use it for DCAing, which would have given you the opportunity to buy the long dip that happened between February to April. As a newbie that's starting his Bitcoin investment, after you have front loaded your Bitcoin investment with a lump sum, you should have an ongoing DCA strategy so that you will be persistent and consistent in accumulate Bitcoin, and it will allow you to take advantage of the market and buy any dip that will occur.