I don't think there is any level of bitcoin accumulation stage that can be considered as over accumulation. You can only accumulated as much as you wanted. Come on, only you don't have the entire bitcoin in circulation, so how can you over accumulate. Moreover accumulation of bitcoin is a deliberate effort. So how can you over accumulate it, I don't really believe there's any over accumulation stage. You only get to a point where you stop being aggressive.
Of course! There is no limit or time limit to depositing Bitcoin. The total amount of Bitcoin is fixed, but you can deposit as much Bitcoin as you need. The supply of Bitcoin is limited, so there is no limit to how much you can deposit, depending on your plan. This is a process that requires careful planning and awareness, as the price of Bitcoin and market movements are constantly changing. If you want to deposit Bitcoin for the long term or on a large scale, you can do so, if your market entry and price collection strategy is conducive to it.
You should adopt the DCA method without changing your strategy when investing. And you should invest for a long time by monitoring the market.