I did summer cuttings a few years ago, take cuttings once new branches harden off. Make cuttings about 6 inches long and leave 2-3 leaves at the tip. Dip in rooting hormone and insert 3-4 inches in sterile media. Put under under humidity dome. In about 2 months you will know if they struck, do not “tug” to check, you will start seeing new growth if they took.