Pregnancy and Hypothyroidism

Hello,

I have been diagnosed with subclinical hypothyroidism since January and after back and forth 50 mcg levothyroxine is working fine.

Onto now, I am 5 weeks pregnant, went to doctor yesterday to adjust my doses since i want tsh to be under 2.5 for first trimester and also did the blood work. My tsh yesterday, december 8 is

Tsh - 2.5 T4 - 1.01 ng/dl

The doctor yesterday only told me take 75 every monday so my dose is increased by 25 mcg per week. Is this enough for first trimester? The dose increase was before lab so i am expecting the doctor will see through it. But where I am from they tend to be relaxed for the first 8-10 weeks. Like even my first prenatal appointment is on 8 weeks and ultrasound scan on 12 weeks. So was wondering should I be proactive about dosage adjustment?