which test should i study?

lately i've been studying for sat bc my parents forced me to but i took an act practice test just to see how i would do and i ended up getting a 34. because i suck and procrastinated taking my tests, my only available testing dates are the july act and the august sat. would it be better to interrupt my sat practice to study and take the act mid july, and lose some time for studying the august sat? for reference my past sat hovered around a 1400 with minor prep, but i've greatly increased my score of sections with practice. thanks