ios – Proper use of strongSelf / weakSelf in nested dispatch_after blocks

I have a complicated launch and I need to present and dismiss multiple view controllers. I have this bit of code where I need to use delays in presentation; I was wondering if my use of strongSelf / weakSelf was proper in the following code with these dispatch_after blocks, or if there are improvements that I should make to the code. I know it’s outdated Objective-C, I am working with an old, large code base.

__weak typeof(self) weakSelf = self;

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1f * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{//CURRENT
    
    __strong typeof(self) strongSelf = weakSelf;
    
    [strongSelf presentViewController:strongSelf.coverVC animated:NO completion:^{
        
        [strongSelf showWindowWithImage:NO];
        
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1f * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            
            __strong typeof(self) strongSelf2 = weakSelf;

            [strongSelf2 dismissViewControllerAnimated:YES completion:^{

                strongSelf2.coverVC = nil;
                [strongSelf2 hideWindow];
            }];
        });
    }];
});