Can't do 'em all on Friday.
So why not finish doing them on Saturday?
I do not know the size of your business. Advertising budget. How much room is in your schedule to add more work.
Though I tend to lean that your pricing maybe a touch to low. along with you need to pre qualify customers on the phone.
Most landscapers have work that is not profitable for them to do. Are you taking on that type of work? Based on where your strengths are you may be best served by being more selective on who you are going to go take on as customers.