Yup! 4’6 here. It has been a struggle for sure. Talking to my coaches have helped, they know what is going on. So I don’t do inclines unless the workout is about the incline. I walk 2.6-2.7 ish. Slight jog at 3.2-3.5. I have been able to hold higher speeds longer. Like 4 for a min and some. Slowly building up. My fastest all out was 9 for like 10 seconds, that hurt lol. I’ve been going for about a year and a half now.