I had kinda similar situation this year. I had a lady move then toward the end of the year call me when she moved into a house. At the time I was cutting her house I was going just EOW but when I talked to her to cut her second house I just told her "I do things a little bit differently since I last cut for you, I now come on a weekly basis" and she was cool with it.
So my advice would be to contact them and tell them this year you are doing things differently and and you come on a weekly or EOW schedule.
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