Weaning from EBF?


My 4.5 month old has been EBF since birth but I'm reaching a point where I need to wean him as I need to restart some medications that aren't safe while breastfeeding. Should I start pumping and introduce him to a bottle with pumped milk/try to stockpile all that I can before I restart the meds? Or should I just introduce formula? Also, what formulas do you recommend? I can likely breastfeed/pump for around one more month before I need to stop.