Множество FileStream

public void Parser()
{
    using (FileStream fsr = new FileStream(filepath, FileMode.Open))
    {
        using (StreamWriter swl = new StreamWriter(new FileStream(fileManager.logDir + "//" + DateTime.Now.ToString("HH_mm_ss") + "_log.txt", FileMode.Create)))
        {
            using (DisposableLazy<BinaryWriter> fsw = new DisposableLazy<BinaryWriter>(() => new BinaryWriter(new FileStream(fileManager.udpFileName, FileMode.OpenOrCreate))))
            {
                using (DisposableLazy<BinaryWriter> cfsw = new DisposableLazy<BinaryWriter>(() => new BinaryWriter(new FileStream(fileManager.cameraFileName, FileMode.OpenOrCreate))))
                {
                    //...
                }
            }
        }
    }
}
public sealed class DisposableLazy<T> : Lazy<T>, IDisposable where T : IDisposable
{
    public DisposableLazy(Func<T> valueFactory) : base(valueFactory)
    {
    }
 
    public void Dispose()
    {
        if (IsValueCreated)
        {
            Value.Dispose();
        }
    }
}

{ 
    using var f1 = new FileStream("...");
    using var f2 = new FileStream("..."), f3 = new FileStream("...");
    ...
    // Dispose f3
    // Dispose f2 
    // Dispose f1
}

public void Parser(Action<FileStream, StreamWriter, DisposableLazy<BinaryWriter>, DisposableLazy<BinaryWriter>> action)
{
    using (FileStream fsr = new FileStream(filepath, FileMode.Open))
    {
        using (StreamWriter swl = new StreamWriter(new FileStream(fileManager.logDir + "//" + DateTime.Now.ToString("HH_mm_ss") + "_log.txt", FileMode.Create)))
        {
            using (DisposableLazy<BinaryWriter> fsw = new DisposableLazy<BinaryWriter>(() => new BinaryWriter(new FileStream(fileManager.udpFileName, FileMode.OpenOrCreate))))
            {
                using (DisposableLazy<BinaryWriter> cfsw = new DisposableLazy<BinaryWriter>(() => new BinaryWriter(new FileStream(fileManager.cameraFileName, FileMode.OpenOrCreate))))
                {
                    action(fsr, swl, fsw, cfsw);
                }
            }
        }
    }
}

Parser(DoParse);
...
void DoParse(FileStream fsr, StreamWriter swl, DisposableLazy<BinaryWriter> fsw, DisposableLazy<BinaryWriter> cfsw)
{
}