Automating Hot Water Pump with Tuya Smart and Smart Sockets: Overcoming Limits

I need a programmer for a hot water pump that should switch on the power between 5:30am and 1:30am in a 3 minute on, 12 minute off mode (this is what the plumber doing the heating installation recommended to me), every day of the week the same.

Unfortunately it appears that the two sockets I tested, i.e. the Gosund SP11 and the LTC SP21BL have a limitation to program a total of 30 actions per day in the Tuya Smart app on Android (15 on 15 off). I have currently returned the Gosund SP11 to the retailer but still own the LTC SP21BL.

I have tried to do the automation but unfortunately it does not work as it should either.

I have created one automation when a condition is met:
If
Schedule 5:30
Then
Switch ON
Perform 3m delay
Switch OFF
Execute 12m delay
Switch ON

but unfortunately at this point the power on the socket stops in the ON position.

I would like to ask if it is possible to somehow perform such automation on the equipment I have for most of the day? The LTC socket menu on the Tuya Smart has Countdown, Schedule, Circulate, Random options under the timer tab.