have a lot/enough on your plate
From Longman Dictionary of Contemporary Englishhave a lot/enough on your platehave a lot/enough on your plateinformal to have a lot of problems to deal with or problems to worry about → plateExamples from the Corpushave a lot/enough on your plate• Beckham may have enough on his plate attempting to recapture his early-season form without being burdened with any extra responsibilities.