Trying for #2 soon wanting to lose some weight

So I was 120 when I got pregnant with my son by the time I had him at exactly 37 weeks due to high blood pressure I was 175 breast fed for a little and got down to 145 now that my son is now 13 months I’m a WHOPPING 160 I’m also only 4’11 🙄 I’m worried that if I have a second at my weight now I’ll gain even more weight by then end of it all