VBA Multiple Process Splits

I am working on a large project and I keep running into this issue.

COMPILE ERROR: Procedure too Large.

I have avoided this by writing around 1000 lines under
Private Sub Userform_Initialize()

then after another 1000
Private Sub Userform_Activate()

but I need more space under the same userform.

I need the function to run when the userform opens and I want to know if I can split the process more than twice in a single userform?