no time limit
There is not time limit on the 150 integrated CPL program, you must adhere to all the requirements of the Day VFR syllabus.
Your present school must have a letter from the CFI of your previous school stating that you were in fact enrolled in a 150 CPL course or you must be enrolled in a 200 hour CPL program.
The onus is on the CFI of the flight school to obtain this confirmation from your previous school.
If your original school did not enrol you in the 150 hour course, you cannot transfer into one at the new school.
cheers
Oz