However, if you are in doubt, you can wait until the right time to buy.
The drawbacks won't matter when you're in profits when the bull season comes, patience after investing is what matters because if you don't have patience you can't succeed in investing. From my research, there hasn't been any individual that invested in Bitcoin and hold that hasn't made profits. Holding will always give you profits because after Bitcoin halving, Bitcoin will reach a new highest price and then everybody that bought Bitcoin previously will be in profit if you have the patience and hold you'll see the top of the bull market. Becoming a great investor will require you to not see the pullbacks that happens to Bitcoin price as a negative thing, see them as a chance to accumulate more Bitcoin to hold. Bitcointalk bull run top happens a year after halving but don't get surprised when something different happend this time as the market is getting more unpredictable.
History has shown us that after halving bitcoin will increase in price and reach new ATH levels and people also expect history to repeat itself, but that doesn't mean it will happen 100% for sure. We are seeing bitcoin make an ATH before the halving and that means things are changing and we don't know what will happen next. The ATH has been created and it is possible that bitcoin will not increase in price anymore, bear season will come, or bitcoin will continue to increase in price and create higher ATHs. Any situation can happen, so don't be subjective and don't have a backup plan.