SSIS How to stop testing connectivity while opening project

I feel so bore while I opening project and I have to wait for long time because SSIS requested testing connectivity and I have to clicked at "OK" several times if my some of my package lost connection from database.

I tired several times how to stop to do this process but seem like there is tiny person feel same me and today I have to say Congratulation with me ^_^ I have found a solution, OKEY! let's go.

STEP-1
You have to open your project and click on your project name on the right page as image as below

STEP-2
Go to on SSIS menu then click at "Work Offline" then save your project

STEP-3

Close your project and reopen the project again, this time you will not see any alert to interrupt you anymore.

NOTE
but please you want to run some package of your project, you have to remove a click on "Work Offline" again, otherwise you will can not to run any package.