hia bestmum, i had a thr when i was 32.
Ultimately the decision is yours, and you should discuss with your docotrs about what you have to d in the meantime. as we dont know the cause for you needing a thr, we cannot possibly comment on whether slowing down will be beneficial.
Anyway, your decision will largely depend on your symptoms, and whether they are acceptable to you. For example, i wanted my thr to do 3 things
1)give me more mobility
2) take away the pain
3)give me my sex life back
i could have delayed but the pain was at an unaccptable level, i couldnt work because of mobility and i wanted to do loads of sex!!
Anyway, in essence i have never looked back as it has done all the three things i wanted