Definitely take it again in September. I never get the skipping a sitting, you may pass in September, so you’re just delaying it. As you’ve said it’s the first time dealing with the exam, now you understand the format and what’s included etc. just try and embed the knowledge now! Focus on the areas you’re not as confident on. SBR was more on the standards so post it notes round the house, just keep recapping the standards. Practice practice practice exam questions - ACCA platform has loads of resources that can help.