Don't expect to be doing 32 Maala a day right away. Start slowly with 1 Maala a day, then 2, then 5, then 10, etc. Without Gurparsaad, doing 32 Maala is difficult, and you have to build your Abhiyaas/Naem slowly but surely over a period of time.
Remember, 32 Maala of Mool Mantar was amongst the daily Nitnaem of Maha-Maha-Maha-Purakhs such as Sant Gurbachan Jee Bhindran Wale, Sant Attar Singh Jee Mastuana Sahib Wale and Baba Nand Singh Jee Nanaksar Wale. It takes time, effort and Guroo Sahib Jee's Kirpaa to have a Jeevan like theirs.
Also, doing 1 Maala of Mool Mantar with concentration may also be very difficult. It may be that the more Abhiyaas/repetition one does, the more that their concentration will improve over time.
All depends on the person's Karam and Guroo Sahib Jee's Nadar/Raeham on that person.
May Guroo Sahib bless us all with Gursikhi and Kamaiye Wala Jeevan.
Waheguroo