Options to Avoid Tummy Tuck?

Nonsurgical options do not usually achieve the dramatic and effective results that a tummy tuck can achieve. However, you can consider nonsurgical medical aesthetic treatments like laser skin tightening or micro needling. These treatments are designed to tighten the skin by stimulating collagen and elastin production. Results may take several sessions and are not as predictable as a tummy tuck, however you may want to consider them. Best of luck!

Unfortunately, for women who have had multiple children, tummy tuck is far and away the best solution. Multiple pregnancies can cause irreversible injury to the skin, causing it to lose its natural elastic recoil. Lesser invasive procedures, such as liposuction and it's many variants, which are geared toward removing fat, will often times result in more loose skin, as the skin is unable to compensate.
In addition, the abdominal wall muscles invariably loosen with multiple pregnancies. Many women complain that they're unable to suck in their tummy or that they have a bulge of the upper tummy. The only effective treatment for this is muscle plication, or sutures which tighten the abdominal wall. This is a standard part of tummy tuck, but is not possible with lesser invasive procedures.
Your best bet is to seek consultation with a board-certified plastic surgeon who can examine you and speak to you about surgical options in greater detail. Best of luck!