OP is planning long for his investment. even he plans for a new ATH or ATH to achieve in the future.
when you get the chance to buy, why not now? because he clearly knows how much ATH Bitcoin was in the previous bull season. and now there has been quite a decline. whether waiting is the right choice or not, but for me, when I have the opportunity to buy. never hesitate. it might be different if the plan is short term or trading.
You can buy it whenever you want as long as you have some spare cash. Even if I have a spare, I'll buy it with bitcoin because I don't want to miss the train like in the past because we were waiting for the dip but it turned out it was already the dip and just left us because we hadn't bought. Also, buying right now is a good preparation for next year's halving, so I am hoping for a positive year next year. I just need to work harder so that I can accumulate enough bitcoin.
People who keep worrying about when they should buy never made any sense to me at all. You should buy anytime you have the money to buy and that should be good enough, I know that it is not a great answer that some people are looking for, they want to buy at the "perfect" time and that makes sense if you know how to do that, if you are a great veteran trader and know when it will go down and when it will go up then you should be doing that but to be fair to everyone else we should also realize that it is not going to be that easy at all.
We are going to end up with something much better and bigger in the long run. Just realize that you may not be that type of person and just buy it whenever you can without worrying about the price.