Question about statistics by goals (accounting for leaving users from subscription pages)

Question

Google Analytics

Hello.
I plan to use a script / plugin to collect outgoing traffic (visitors). The type of such scripts is usually called Exit Splash. But there is a question about the metric (tracking).
Below I will describe the issue. I will try to describe as simply as possible so as not to confuse you.
There is a "subscription page #1" with "product #1". After entering the email, the user is redirected to the "thank you for subscription #1" page.
In this case, in the Google Analytics counter, I put Goal #1 = “thank you for subscribing #1” page.
Thus, I keep track of how many goals have been achieved, i.e. how many visitors entered their email.
If the user closes the “subscription page #1” (deciding not to enter his email in exchange for “product #1”), then the Exit Splash script, with the consent of the visitor, redirects him to the “subscription page #2” (where it is proposed to enter an email for “ product number 2"). After entering the email, the user is redirected to the "thank you for subscription #2" page.
This raises the question of how to track the metric.
For example, if in the Google Analytics counter I set Goal #2 = “thank you for subscribing #2” page, then of course the number of leaving users who still decide to enter their email on the second page will be counted.
But at the same time, since “subscription page No. 2” exists on its own (independently), and there are visitors who immediately go to it and leave their email, then they are redirected to the “thanks for subscription No. 2” page. Then the statistics of Goal #2 (about outgoing traffic) will be distorted.
How to be in this case?
When creating goals in Google Analytics, is it possible to set some kind of condition that will ensure the correct calculation of goals in the situation described above?
Or will it be necessary to create a duplicate of the “subscription page No. 2” intended only for calculating the statistics of a script like Exit Splash?