Customer Service counters in shops are often busy, dealing with people wanting to return or exchange items. Each of us has the right to change our minds but there are usually one or two conditions attached should we decide to. You appear to be experiencing a change of both mind and heart now. Feel free to make a change but be prepared to have to start over in some way. Be 'live' as well to how much stronger and longer lasting what gets restarted now will be.