It is better to call the recontracting hotline regarding your concern. I hope you already know naman yung hotline ng Globe.
For early recontract, you need to settle first your pre-termination fees before Globe can process your recontract. Regarding naman as request mo kung pwedeng stagnant payment to settle your pre-termination pwede naman kaso you need to re-classify this as early termination para di na madagdagan yung charges mo. As to your request na monthly basis mo sya babayaran, you need to visit the nearest Globe Store to arrange this and if they allow you to this kind of setup. Sa question mo naman na kung pwedeng babaan yung plan, yes once settled na yung pre-termination fees na babayaran mo pwede ka mag-downgrade sa mababang plan. Since sabi mo same model ng phone (iPhone 6 Plus) balak mo kunin sa recontract take note mo lang na mas mababang plan, mas malaki ang cashout mo.