Regex search and replace? Tabs ...

I have a regexp that works, in my software I search for timestamps with this:

[01]?[0-9]:[0-5][0-9] and a macro replaces the carriage return with a tab and then I proceed from there. But it's very time-consuming when the timestamps go over 10 minutes as then 2 tabs are required (it's a weird thing but that's how it goes).

1. So, to outline, from 0:00 to 9:99 timestamps, one tab is needed afterwards.

2. But from 10:00 and up, i.e., timestamps like 22:46 and 1:35:05 for example, require 2 tabs aftewards.

If it's any help, here is what my script looks like that goes through the entire document and deletes the carriage return and puts one tab after the timestamp (but where the timestamp needs one tab only between 0:00 and 9:99, then 2 tabs for larger timestamp times.

document.selection.Find("[01]?[0-9]:[0-5][0-9]",eeFindNext | eeFindReplaceRegExp);
document.selection.EndOfLine(false,eeLineView);
document.selection.Text="\x09";
document.selection.Delete(1);

Thank you!