You can change the frequency and the amount of products on each subscription. Click on Subscriptions and this shows every product that you ate subscribed to.
On the subscription product you want to pause click Manage Subscription
The first option you will see is the Charge Date once you click on it, it will give a calendar to select the next charge date, in wich will also be the next shipping date
The second option is Delivery schedule, once clicked a tab is going to open with 3 selections were you can choose from Days, Weeks, and Months, the 1st tab will allow you to choose the number and once you select the time frame that will be your next delivery schedule.