Can I tweak FT training for areas I lack?

[Junior V]

Hi guys, my weak points are mainly arms and shoulders.

Since Ive started on FT my shoulders have gotten smaller. Ive done 2 blasts now (loving it) first blast at TIER 1 now at TIER 2.

For shoulders on load day I do:
Week A: Seated DB Press, Front Raises
Week B: Hammer stregnth shoulder press, Machine Shoulder Press
Week C: Seated BB press on rack x2

On pump day:
Week A: Lateral DB Raises x 2
Week B: Rear Delt Raises, Lateral DB Raises
Week C: Seated DB Press, Lateral DB Raises

Muscle Round:
Week A: Rear delt Raises x 2
Week B: Front Raise, Lateral machine Raise
Week C: Upright Rows x 2

Could I tweak to do 3 sets on shoulders? My stregnth has come to a hold on these, while everything else is getting stronger.

Arms also a week point of mine, really struggle to make them grow and with this they have also gone down

1 Superset and 1 MR for Bi and 1 MR for tri dont feel is enough.

Dont get me wrong when I end my session Im absolutely fcked. I beaten all my PB's in everthing.


Cheers guys.