In the initial stages of contact, most exes want to keep some distance. Texts only, social media, messaging or some other “remote” mode of communications may be the only way you can have any conversations with them.
In my experience, re-opening lines of communication with your ex should take 1 – 2 months on average from the time your ex acknowledges your break-up acceptance text or email. It takes some people shorter and others longer, this is the average time before you see more interest, engagement, initiating contact etc.
It is important that your ‘break-up acceptance text or email” be effective enough to even begin the process of re-opening the lines of communication.