If further delay in user trails **doesn't** happen, then user trails can be concluded in late 2025-early 2026.
With "limited series production" starting in late 2026-early 2027.
Due to delays in user trail, rudram 1 and 2 will have their production start at similar time.
In "User trails" IAF tests the missiles in "realistic wartime scenarios".
So it's not just attaching a missile, flying and firing it, as done in validation trails.
The modified su30mki testbed for user trails was delayed until late 2024.
The modified testbed is modified for all three rudram 1,2,3 missiles.
Su30 mki was given for modifications in late 2023.
So IAF delayed in providing testbed to be modified for a year when captive trails for rudram 1 were completed in 2022, and it took approx an entire year to modify a su30 just to become compatible with another missile.
So user trails began in late 2024.
So that's basically the saga of rudram 1 induction delay by 2-3 years than expected.
Further delays are further possible

.