I don't like this one but you can also use bitcoin on other blockchain, I think bsc has one of the biggest liquidity of bitcoin. You can simply receive bitcoin token in large quantities and when you are done, send them to an exchange and then withdraw real bitcoin quick. Note that the bitcoin on other chain are not be hold, once you are done having them, send them to exchange where you can withdraw real bitcoin to your personal wallet address.
The suggestion no bad as e go help make confirmation faster since some blockchain get a very fast confirmation speed pass Bitcoin blockchain but why I no go advice make we use Bitcoin on other blockchain na say, you no dey promote the use of Bitcoin well to begin with and you dey exposed yourself and customers to the volatility of Altcoins as those Bitcoin wey dey those other Blockchain are basically altcoins. Scammers fit send you a different Bitcoin wey no dey the main smart contract of the real pegged Bitcoin and if you no dey very observant dem go scam you. Scammers will create multiple pegged Bitcoin that are fake and newbies wey no sabi wetin dey sup go fall victim.
But if you are scared that the Naira will lose it's value before the the high transaction cost for bitcoin network go reduce, I go come suggest you use the same amount you sell out and convert it to USD or USDT. By doing this you won't run any loss, and you can easily use the usd or usdt and buy bitcoin when the high cost is reduced. As a business man don't ever lose a customer because of one payment platform is experiencing little problem.
As you dey accept Bitcoin, you no go only accept Bitcoin na if you be wise business man. Altcoins are a part of the industry anyhow we like am or not so using some other altcoins when Bitcoin dey experience some downside no bad. You fit also accept stablecoin, usdt is one of the most traded stablecoin and you fit decide to accept am as the transaction fee no too cost and you fit get quick liquidity when you wan sell. Immediately Bitcoin network returns to normal, you fit begin to accept Bitcoin back. Just as you talk, e no wise to lose customers irrespective of the reasons as dat person fit discourage potential customers from patronizing you and na so more go dey go another place go buy something. Always put your customers need first so make dem comfortable at all times.