Hey there,
How are you doing? Okay, so I understand that you're using 2Checkout as your default payment gateway on your Shopify store. I have taken note that you want inline checkout instead of redirecting the users to 2Checkout's default payment page. I am pleased to let you know that I can do this project and your visitors will not have to make payments on a new page.
I have over 6+ years of experience in web development so I am well aware with such tasks. So, if you have any questions or concerns, please let me know. I am waiting for your positive response.
Sincerely,
Talha